Author: tianli

Ungnade, Herbert E. published the artcileCondensations of aromatic aldehydes and aryl carbinols with aluminum chloride and aromatic systems, Quality Control of 596-38-3, the publication is Journal of the American Chemical Society (1953), 3333-6, database is CAplus.

The reaction of aryl carbinols and aromatic aldehydes with aromatic hydrocarbons and excess AlCl₃ has been extended to include substituted benzyl alcs. as donors and mesitylene, Ph₂, and Ph₂O as acceptor mols. An unexpected reaction occurred in Ph₂O with formation of 9-phenylxanthydrol (I) from BzH, PhCH₂OH, or Ph₂CHOH. The formation of I in these reactions is unique since the oxygenated compounds apparently undergo condensation at the normally unreactive o-positions of the Ph₂O rather than cleavage. BzH (30 g.) added during 0.5 h. with stirring to 20 g. Ph₂ and 79 g. AlCl₃ at 60°, the mixture stirred 3.5 h. at 60°, decomposed, and steam-distilled, the nonvolatile fraction (32.39 g.) distilled in vacuo, and the distillate (6.02 g., 28%), b_0.001 170-210°, crystallized 3 times from ligroine gave diphenylanthracene (II), m. 202-3°, λ_maximum 230 mμ (log ε 4.65), 257.5 (4.97), 277.5 (5.09), 332.5 (3.67), 347.5 (3.91), 365 (4.01), 385 (3.89). II (1 g.) in 14 cc. glacial AcOH refluxed gently over a low flame and treated slowly during 0.5 h. with 4.0 g. CrO₃ in 4 cc. H₂O and 16 cc. AcOH, the solution cooled, diluted with 200 cc. H₂O, and filtered, and the crude green solid washed with H₂O, dilute aqueous NaOH, and again H₂O, and recrystallized from 95% EtOH and dried in vacuo at 100° gave 1.02 g. (93.5%) diphenylanthraquinone, yellow needles, m. 270-1°. BzH (25 g.) added during 0.5 h. to 67 g. AlCl₃ in 60 cc. mesitylene, the mixture stirred 3.5 h. at 60°, decomposed and steam-distilled, the distillate taken up in C₆H₆, washed with saturated aqueous NaHSO₃ [the insoluble adduct gave 7.86 g. (31%) BzH (oxime, m. 32-3°)], and the C₆H₆ solution rectified yielded 1.0 g. (2%) xylenes, b₅₉₈ 140-50°, n_D²³ 1.4970, λ_maximum^EtOH 266 mμ (log ε 2.40), 8.7 g. (17%) trimethylbenzenes, b₆₀₀ 150-60°, n_D²³ 1.5005, λ_maximum^EtOH 266 mμ (log ε 2.40) [gave nitrated 2,4,6-(O₂N)₃C₆Me₃, m. 230-2°], and 2.6 g. (4%) C₆H₂Me₄, b₆₀₀ 180-5°, n_D²³ 1.5105, λ_maximum 269 mμ (log ε 2.57); a portion (12.86 g.) of the nonvolatile residue (22.50 g.) refluxed with ligroine (b. 70-90°), the solution filtered from 2.74 g. insoluble material, the solution adsorbed on Al₂O₃, and the resulting 3 bands (blue fluorescing under UV light) eluted with ligroine gave 7.34 g. (45.7%) oily solid, m. 132-8°, which gave, after repeated recrystallization from ligroine, tetramethylanthracene, m. 148-8.7°, λ_maximum 338 mμ (log ε 3.45), 350 (3.66), 366 (3.78), 386 (3.68). BzH (25 g.), 67 g. AlCl₃, and 75 cc. Ph₂O treated in the usual manner, the steam distillate extracted with Et₂O, the extract washed with H₂O, dried, and distilled gave 1.2% unreacted BzH (b₁₉ 96-8°) and 44.3% recovered Ph₂O [identified as (p-H₂NSO₂C₆H₄)₂, m. 157-8°]; the semi-solid residue from the steam distillation taken into C₆H₆, washed, dried, and distilled gave 32.2 g. distillate; a 2.18-g. portion in C₆H₆ gave 4 distinct bands on Al₂O₃; the bulk of the product was contained in 3 bands which were eluted with C₆H₆ and gave 0.12 g. red viscous oil, 1.48 g. red-brown oil, and 0.46 g. I crystalline solid, m. 149-54° (from ligroine); distillation of the residue (9.55 g.) gave 4.15 g. red oil, b_0.001 190-210°, which solidified on standing to yield 3.02 g. I, m. 156-7° (from C₆H₆-ligroine); on distillation in vacuo of larger quantities of the residue, pyrolysis and reduction occurred to yield PhOH and 9-phenylxanthene. Similar results were obtained with PhCH₂OH and Ph₂CHOH as starting materials, the over-all yields of I being from BzH 15.5%, from PhCH₂OH 15%, and from Ph₂CHOH 27%. I, m. 157-8°, was also obtained in 76% yield from xanthone and PhMgBr. I dissolved with green-yellow color and fluorescence in concentrated H₂SO₄; it gave derivatives with semicarbazide (m. 206-7°), NH₂OH (m. 194-5°), and PhNHNH₂ (m. 127-8°); it was recovered unchanged from its reaction mixture with MeMgI, and with acylating and oxidizing agents under ordinary conditions; pyrolyzed at 282° it gave PhOH. I was reduced to 9-phenylxanthene (III), m. 142-3° (from ligroine), by a Clemmensen reduction (91.3%), by a Schmidt reaction (96.6%), and by refluxing with alc. HCl (87.7%); insoluble in concentrated H₂SO₄, gave oxidized with KMnO₄ in aqueous Me₂CO, I, m. 155-6° (from ligroine). Xanthone (IV) (5 g.) in dry C₆H₆ added to 0.025 mol PhCH₂MgCl in dry Et₂O, the complex decomposed with ice and aqueous NH₄Cl, and the resulting yellow oil triturated with petr. ether, recrystallized from ligroine, or chromatographed on Al₂O₃ yielded 89% crystalline benzalxanthene (V), yellow needles, m. 110-11°, yellow with green fluorescence in cold concentrated H₂SO₄. The reduction of 2.65 g. V with HI and Ac₂O cleaved at the 9,10 double bond to give 0.11 g. IV, m. 158-60° (recrystallized m. 173-4°), and 0.74 g. 9-benzylxanthene (VI), m. 69-70°. p-PhOC₆H₄Bz (VII), m. 69.2-9.4°, was prepared by the method of Kipper [Ber. 38, 2490(1905)]; soluble with yellow color in cold concentrated H₂SO₄; unchanged under the conditions of the cyclodehydration procedure of Bradsher (C.A. 34, 6265.4); cleaved by fusion with NaOH at 350° to give BzOH, Ph₂O, and traces of PhOH and p-HOC₆H₄Bz; and showed strong IR absorption at 6.05 and 8.02, and 10 addnl. bands common to PhBz and Ph₂O. VII (2.0 g.) in 100 cc. 95% EtOH hydrogenated at 30 mm. pressure with 3 g. Raney Ni and 1 drop 50% aqueous KOH as catalyst, the mixture filtered, the solvent removed, and the residue crystallized from petr. ether gave 1.70 g. (85%) p-PhOC₆H₄CH(OH)Ph (VIII), m. 75.8-6.9°. VII (20 g.) added to amalgamated Zn (from 100 g. Zn and 10 g. HgCl₂) and 100 cc. concentrated HCl, the mixture refluxed 12 h. while 3 fresh 50-cc. portions concentrated HCl were added, the product extracted with C₆H₆, the extract washed neutral, dried, and evaporated, the residue (19.67 g.) sublimed from a mol. still at 0.001 mm., and the colorless distillate (9.34 g.) resublimed to give 8.61 g. colorless liquid which solidified on standing to give p-PhOC₆H₄CH₂Ph (IX), m. 41-2°; the 2nd fraction from the mol. distillation, a viscous oil, which set to a glassy solid in the side arm, is believed to be the corresponding pinacol p-MeOC₆H₄CH₂OH (33 g.) added during 1 h. to 75 g. AlCl₃ in 160 cc. C₆H₆, and the mixture worked up as usual gave unreacted C₆H₆, b₆₀₆ 72-5°, n_D²⁵ 1.4952, 11.8 g. PhOMe, b₁₉ 75-8°, n_D²³ 1.5147 [redistilled 8.4 g. (43%), b₆₀₆ 144°, n_D²² 1.5157, identified as 2,4-(O₂N)₂C₆H₃OMe, m. 84-5°], and 3.2 g. anthracene (X), b₁₉ 155-60°, colorless plates, m. 212-13°; an addnl. amount X, m. 210-11°, was obtained by decolorizing the still residue with Nuchar and recrystallizing To establish the composition of the binary mixture X-H₂O, 1.0 g. pure X was steam-distilled at 97°/603 mm. to furnish 0.49 g. X in 5 l. distillate during 1 h.; the binary mixture contained thus 0.0098% X. X (1 g.) and 10 g. PhOMe steam-distilled at 98°/605 mm. yielded 5 l. distillate in 1 h. containing 0.30 g. X. 3,4-(MeO)₂C₆H₃CH₂OH (0.148 mol) gave with 0.297 mol AlCl₃, and 150 cc. thiophene-free C₆H₆, by the general procedure, 1.34 g. guaiacol (phenylurethane, m. 134°) and 1.03 g. X, m. 211-12°. To 0.20 mol o-HOC₆H₄CH₂OH and 150 cc. C₆H₆ was added 0.40 mol AlCl₃ in small portions, and the mixture worked up as usual to give 0.61 g. PhOH and 2.47 g. X. To 10 g. LiAlH₄ in 180 cc. dry Et₂O was added with stirring 34.50 g. o-PhCH₂C₆H₄CO₂H, m. 110-11°, in 100 cc. Et₂O at such a rate as to keep the mixture refluxing gently, the mixture stirred 0.5 h. and decomposed cautiously with cooling with 100 cc. H₂O, and then with 10% aqueous H₂SO₄, and the Et₂O layer washed with 10% aqueous Na₂CO₃, dried, and evaporated to give 20.47 g. (64.5%) o-PhCH₂C₆H₄CH₂OH (XI), b_0.001 130-2°. XI (10 g.) in 50 cc. C₆H₆ gave with 20 g. AlCl₃, by the general procedure, 5.00 g. X, m. 212-14° (sublimed at 160-200°/1-2 mm.). XI (10 g.) treated in exactly analogous manner with 75 cc. PhMe and 0.15 mol AlCl₃ yielded 11.08 g. non-volatile residue which gave 4.76 g. dimethylanthracene, m. 215-17° (from ligroine); the volatile fraction contained 4.02 g. (47.8%) Ph₂CH₂, b. 260-2° (identified as BzPh, m. 47-8°). The UV absorption maximum in mμ and in parentheses the log ε values in 95% EtOH are listed for: Ph₂O 225 shoulder (4.01), 271 (3.31); p-PhOC₆H₄Me, 225 (4.06), 278 (3.30); 3,4-Me₂C₆H₃OPh, 226 shoulder (4.05), 278 (3.32); VIII, 233 (4.18), 265 (3.27); IX 228 shoulder (4.21), 271 (3.47); VII, 286 (4.24); xanthene, 247 (3.88), 283 (3.36); III, 250 (3.91) 284 (3.47); VI, 243 (3.94), 283 (3.50), 338 (2.37); V, 252 shoulder (4.10), 284 (3.89), 341 (4.08); xanthydrol, 239 (4.17), 290 (3.59), 336 (2.69); I, 244 (4.10), 290 (3.61); 1-(9-phenylxanthyl)-semicarbazide, 245 (4.11), 290 (3.69); IV, 260 (4.11), 288 (3.66), 336 (3.85). The UV absorption spectra of I and III are recorded in Document 3953 ADI Auxiliary Publications Project, Photoduplication Service, Library of Congress, Washington, D.C.

Journal of the American Chemical Society published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C14H20BClO2, Quality Control of 596-38-3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Moubri, K. published the artcileDiscovery of a recombinant Babesia canis supernatant antigen that protects dogs against virulent challenge infection, Category: alcohols-buliding-blocks, the publication is Veterinary Parasitology (2018), 21-29, database is CAplus and MEDLINE.

Soluble parasite antigens (SPA) in supernatants of in vitro cultures of Babesia canis can be used to vaccinate dogs against virulent B. canis infection. The moment that immunity becomes apparent coincides with the appearance of antibodies against SPA in the serum of the vaccinated animals. This so-called vaccination-challenge serum (VC-serum) was used to precipitate antigens from B. canis culture supernatants in agarose gels. This antigen preparation was then used to analyze the reactivity of sera from vaccinated dogs on western blots showed that the first appearance of antibody reactivity against a protein that migrated at the 39 kDa position in SDS-PAGE gels was associated with the moment vaccinated dogs started to recover from a virulent challenge infection. In addition, pulse-chase experiments revealed that a 39-40 kDa doublet was released into the supernatant of B. canis cultures starting 15 min after the chase. This doublet was specifically precipitated by VC-serum, thus corroborating that the 39-40 kDa doublet in SPA preparations was of parasite origin. Partial amino acid sequencing allowed the discovery of the gene that encoded the 39-40 kDa doublet (canine Babesia antigen; CBA). The full-length gene was cloned and expressed in E. coli. The recombinant CBA protein (rCBA) was recognized by VC-serum, and antibodies against rCBA precipitated the 39 kDa antigen of SPA preparations and of merozoites of B. canis. In addition, anti-rCBA serum reacted with the surface of B. canis merozoites (but not with B. rossi merozoites) in immunofluorescence. Vaccination of dogs with rCBA induced antibodies against rCBA, which recognized B. canis merozoites. Vaccinated dogs were protected against virulent challenge infection by limiting parasite proliferation. As a result, the development of clin. signs was prevented and the animals self-cured. In contrast, six out of seven non-vaccinated control dogs developed relatively high parasitemia and serious clin. signs associated with poor tissue perfusion. This antigen can be used to replace the SPA antigen in the conventional B. canis vaccines, which eliminates the need for dog blood and serum for vaccine production

Veterinary Parasitology published new progress about 122-20-3. 122-20-3 belongs to alcohols-buliding-blocks, auxiliary class Organic Pigment, name is Triisopropanolamine, and the molecular formula is C9H21NO3, Category: alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Bold, Christian P. published the artcileStudies toward the Synthesis of an Oxazole-Based Analog of (-)-Zampanolide, Related Products of alcohols-buliding-blocks, the publication is Organic Letters (2021), 23(6), 2238-2242, database is CAplus and MEDLINE.

Studies are described toward the synthesis of an oxazole-based analog I of (-)-zampanolide. Construction of (-)-dactylolide analog 22 was achieved via alc. II and acid III through esterification and Horner-Wadsworth-Emmons (HWE)-based macrocyclization; however, attempts to attach (Z,E)-sorbamide to I proved unsuccessful. The C(8)-C(9) double bond of the macrocycle was prone to migration into conjugation with the oxazole ring, which may generally limit the usefulness of zampanolide analogs with aromatic moieties as tetrahydropyran replacements.

Organic Letters published new progress about 57044-25-4. 57044-25-4 belongs to alcohols-buliding-blocks, auxiliary class Epoxides,Chiral,Aliphatic hydrocarbon chain,Alcohol, name is (R)-Oxiran-2-ylmethanol, and the molecular formula is C3H6O2, Related Products of alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Ishii, Fumio published the artcileOxidation of hydroquinone and catechols with aqueous sodium hypochlorite under phase-transfer catalysis, Recommanded Product: 2,5-Bis(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol, the publication is Synthesis (1980), 706-8, database is CAplus.

Hydroquinones I (R = H, Me, Me₃C, tert-octyl, Ph, 4-MeC₆H₄, EtCMe₂; R¹, R³ = H, Me; R² = H, Me₃C, EtCMe₂, tert-octyl; RR¹ = CH:CHCH:CH) and II (R⁴ = H, Me₃C) were treated with 10% NaOCl in the presence of Bu₄N⁺.HSO₄^– to give 14-91% III and 91-92% IV, resp.

Synthesis published new progress about 903-19-5. 903-19-5 belongs to alcohols-buliding-blocks, auxiliary class Benzene,Phenol, name is 2,5-Bis(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol, and the molecular formula is C22H38O2, Recommanded Product: 2,5-Bis(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Jayakrishnan, S. S. published the artcileDrug utilization pattern in paediatric peritonitis, Quality Control of 23828-92-4, the publication is World Journal of Pharmacy and Pharmaceutical Sciences (2020), 9(10), 2159-2174, database is CAplus.

Peritonitis is defined as inflammation of a portion or all of the parietal and visceral peritoneum. In peritonitis, an infection can rapidly spread into the blood (sepsis) and then to other organs, carrying the risk of multiple organ failure and if left untreated death will occur. The objective of the study was to determine the drug utilization pattern of peritonitis among paediatric population. It was a Descriptive study for a period o6 mo with 115 patients. All paediatric patients diagnosed clin. with peritonitis reporting to the Department of Paediatric Surgery for undergoing treatment. A written informed consent was taken in a prescribed format from the patient/caregiver diagnosed with peritonitis. Patient who met the inclusion criteria were enrolled for the study. All the information relevant to the study was collected from case records and direct interview with the patient / caregiver by the help of a physician. In the study, majority of patients (43.5%) were in the age group of 7-10 years and were males. The drugs were classified into 9 classes, depending on the therapeutic indications. Majority of patients were given drugs belonging to Antibiotics in class I (100%), followed by Antiulcers in class -IV (97.4%). Drugs belonging to class- VI Antiemetics (18.3%) were the least used in the study population. Other categories of drugs in the study population included class – II used as Analgesics and Antipyretics (93.9%), class – VIII as Vitamins (45.2%), class – IX i.e, Miscellaneous drugs (32.2%), class V as Laxatives (29.6%), class VII (27.8%) used as Antiasthmatics and Antispasmodics class III (26.1%). The study is concluded by the demog. and drug utilization pattern in paediatric peritonitis. Drug utilization evaluation played a key role in helping health care system to understand, interrupt and improve the prescribing, administration and use of medications.

World Journal of Pharmacy and Pharmaceutical Sciences published new progress about 23828-92-4. 23828-92-4 belongs to alcohols-buliding-blocks, auxiliary class Membrane Transporter/Ion Channel,Sodium Channel, name is trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride, and the molecular formula is C13H19Br2ClN2O, Quality Control of 23828-92-4.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Wada, Masanori published the artcileReactions of 1,8-Dimethoxy-9-phenylxanthen-9-ol in the Presence of an Acid, and Its Basicity, SDS of cas: 596-38-3, the publication is Bulletin of the Chemical Society of Japan (1999), 72(4), 779-785, database is CAplus.

In the presence of a catalytic amount of acid, the title xanthenol (1) reacted in acetone to give 1,8-dimethoxy-9-phenylxanthen-9-ylmethyl Me ketone. Analogous reactions were observed for Et Me ketone and acetophenone, but not for di-Et ketone. Propanal and butanal also reacted to give 2-(1,8-dimethoxy-9-phenylxanthen-9-yl)propanal and 2-(1,8-dimethoxy-9-phenylxanthen-9-yl)butanal, resp. In hot primary and secondary alcs.,1 was reduced to give 1,8-dimethoxy-9-phenylxanthene. 1 also reacted with methoxybenzenes, phenol, and N-alkylanilines to give 9-aryl-1,8-dimethoxy-9-phenylxanthenes. The basicity of 1, or the stability of the carbenium ion (pK_R⁺ = -0.81), was measured in hydrochloric acid and compared with those of related 9-arylxanthen-9-ols, such as 1,8-dimethoxy-9-(2,6-dimethoxyphenyl)xanthen-9-ol (1.14), 9-(2,6-dimethoxyphenyl)xanthen-9-ol (4.80) (8), and 9-phenylxanthen-9-ol (0.75). The drastic differences in the reactivities and the basicity between 1 and 8 were attributed to a steric effect rather than an electronic effect.

Bulletin of the Chemical Society of Japan published new progress about 596-38-3. 596-38-3 belongs to alcohols-buliding-blocks, auxiliary class Other Aromatic Heterocyclic,Benzene,Alcohol, name is 9-Phenyl-9H-xanthen-9-ol, and the molecular formula is C4H6O3, SDS of cas: 596-38-3.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Taniguchi, Ikuo published the artcilePiperazine-immobilized polymeric membranes for CO₂ capture: mechanism of preferential CO₂ permeation, HPLC of Formula: 622-40-2, the publication is Polymer Journal (Tokyo, Japan) (2021), 53(1), 129-136, database is CAplus.

Amines are incorporated into various membranes to improve their CO₂ separation performance. With amine-containing polymeric membranes, gas transport properties are often enhanced under humidity, where CO₂ migrates through the membranes in the form of bicarbonate ions. Piperazine (Pz) and its derivatives are known to catalyze the conversion of CO₂ to bicarbonate ions and have been used in liquid amine scrubbing technol. Piperazines were immobilized in poly(vinyl alc.) (PVA), and the resulting polymeric membranes showed high CO₂ separation performance over H₂ and CH₄. The gas transport properties were dependent on the chem. structure of the amines. In particular, 3-(1-piperazinyl)-1,2-propanediol (PzPD)-containing polymeric membranes gave excellent CO₂ separation performance, and the CO₂ permeability and CO₂ selectivity over CH₄ were 1060 Barrer and 370, resp., at 50°C and 90% relative humidity with a transmembrane CO₂ pressure of 11 kPa. The interaction between PzPD and CO₂ was quant. studied by inverse-gate decoupling ¹³C NMR spectroscopy. CO₂ interacted with the secondary amino group on the Pz ring to form a carbamate, which was readily hydrolyzed to produce bicarbonate ions. The hydroxyl group on the C2 carbon of PzPD facilitated the interaction between CO₂ and the amine through hydrogen bonding, resulting in enhanced diffusivity of CO₂ in the membranes.

Polymer Journal (Tokyo, Japan) published new progress about 622-40-2. 622-40-2 belongs to alcohols-buliding-blocks, auxiliary class Morpholine,Alcohol, name is 2-Morpholinoethanol, and the molecular formula is C9H10O3S, HPLC of Formula: 622-40-2.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Saito, Akinori published the artcileHydrosilane-assisted formation of metal nanoparticles on graphene oxide, Category: alcohols-buliding-blocks, the publication is Bulletin of the Chemical Society of Japan (2016), 89(1), 67-73, database is CAplus.

Metal nanoparticles were formed on graphene oxide by a deposition process with hydrosilane, giving thin layer metal-graphene oxide (metal/GO) composites. The particle size and catalytic activity could be controlled by varying the hydrosilane amount Hydrosilane prevented the aggregation of GO layers by surface functionalization via silane coupling reaction. The metal/GO composites were evaluated as catalysts in hydrosilane oxidation

Bulletin of the Chemical Society of Japan published new progress about 597-52-4. 597-52-4 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic Chain, name is Triethylsilanol, and the molecular formula is C6H16OSi, Category: alcohols-buliding-blocks.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Grabosch, Carsten published the artcileA dual Click’ strategy for the fabrication of bioselective, glycosylated self-assembled monolayers as glycocalyx models, Quality Control of 96345-79-8, the publication is Organic & Biomolecular Chemistry (2013), 11(24), 4006-4015, database is CAplus and MEDLINE.

Solid surfaces decorated with specific saccharide patterns can serve as a model for the chem. and structurally highly complex glycocalyx of eukaryotic cells. Here we present an approach based on self-assembled monolayers on gold, which are built up in a three-step manner to provide a solid basis, a biorepulsive oligoethylene glycol part, and a specific glycoside terminus, e.g. I, in a modular way. Of the different reaction sequences, the one with two consecutive click reactions’ (the copper(I)-catalyzed 1,3-dipolar cycloaddition of alkynes with azides and the thiourea-bridging of isothiocyanates with amines) directly on SAM’ results in the densest layers, as demonstrated by IR absorption reflection spectroscopy and ellipsometry. As a real life’ test, the surfaces obtained this way were used for bacterial adhesion experiments Here the biorepulsivity of the middle part of the SAMs as well as specific binding to the carbohydrate termini could be clearly demonstrated.

Organic & Biomolecular Chemistry published new progress about 96345-79-8. 96345-79-8 belongs to alcohols-buliding-blocks, auxiliary class Sugar Units,Gal and Man, name is (2R,3S,4S,5S,6R)-2-(Hydroxymethyl)-6-(4-isothiocyanatophenoxy)tetrahydro-2H-pyran-3,4,5-triol, and the molecular formula is C13H15NO6S, Quality Control of 96345-79-8.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts

Haraguchi, Kazutoshi published the artcileNew Aqueous Solutions with Lower Viscosities than Water, Recommanded Product: 3,3,3-Trifluoropropan-1-ol, the publication is Bulletin of the Chemical Society of Japan (2021), 94(4), 1185-1191, database is CAplus.

Liquid water exhibits many anomalous phys. properties because of its unique structure and hydrogen bonding networks, which were mostly uncovered at the beginning of the 20th century. Because of its interesting properties and microstructures under various conditions and in aqueous solutions, understanding the behavior of water is important, but remains scientifically challenging. Regarding the viscosity of aqueous solutions, despite the discovery 147 years ago that very small amounts of certain salts decrease the viscosity of water slightly, there has been no significant progress to date. Herein, we report new aqueous solutions, with low additive fractions and much lower viscosities than pure water, which exhibit unique viscosity-composition curves. The findings should spark renewed interest in scientific research on water, which may greatly impact numerous industries.

Bulletin of the Chemical Society of Japan published new progress about 2240-88-2. 2240-88-2 belongs to alcohols-buliding-blocks, auxiliary class Trifluoromethyl,Fluoride,Aliphatic hydrocarbon chain,Alcohol, name is 3,3,3-Trifluoropropan-1-ol, and the molecular formula is C3H5F3O, Recommanded Product: 3,3,3-Trifluoropropan-1-ol.

Referemce:
https://en.wikipedia.org/wiki/Alcohol,
Alcohols – Chemistry LibreTexts