Category: alcohols-buliding-blocks

Opsomer, Tomas published the artcile1,2,3-Triazole-Mediated Synthesis of 1-Methyleneisoquinolines: A Three-Step Synthesis of Papaverine and Analogues, HPLC of Formula: 22483-09-6, the main research area is methyleneisoquinoline preparation heterocyclization Pomeranz Fritsch reaction; papaverine analog preparation.

A metal-free three-step synthesis toward functionalized 1-methyleneisoquinolines from readily available substrates is reported. First, acetal-containing 1,2,3-triazoles were prepared via a high-yielding triazole formation reaction and quant. converted into triazolo[5,1-a]isoquinolines. Next, the acid-promoted ring opening of these fused triazoles was studied in order to obtain coupling to a diverse scope of nucleophiles, including carbon nucleophiles such as veratrole. By means of non-nucleophilic strong acids under anhydrous conditions, a series of unprecedented isoquinolines and imidazo[5,1-a]isoquinolines was synthesized.

Organic Letters published new progress about Heterocyclization. 22483-09-6 belongs to class alcohols-buliding-blocks, name is 2,2-Dimethoxyethanamine, and the molecular formula is C4H11NO2, HPLC of Formula: 22483-09-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Agatonovic-Kustrin, Snezana published the artcileQSAR analysis of the partitioning of terpenes and terpenoids into human milk, Application of rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, the main research area is human milk terpene terpenoid partitioning QSAR analysis.

Studies have shown that olfactory experience during breastfeeding plays an important role in the later development of certain food preferences in life. Thus, the aim of this study was to predict partitioning of odorous terpenes and terpenoids into breast milk from a predictive QSAR model for drug transfer. A large heterogenous data set based on drugs and their active metabolites that were used to build a QSAR was collected from the literature. Due to the vast structural diversity of these compounds and possibly different mechanisms involved in M/P partitioning, a non-linear artificial neural network (ANN) model was used to develop a predictive QSAR model. The value of the correlation coefficient of predicted vs. exptl. measured M/P values for the final model (14-2-1) was high (R = .82). The descriptors selected in the final model (14-2-1) belong to 3 main categories: (a) solubility/permeability descriptors (dipole moment, polar surface area, aromatic ring count and hydroxyl group count), (b) reactivity descriptors (i.e. HOMO energy) and (c) shape descriptors (different ring size counts, counts of Me groups and mol. depth). Results of this study predict that many volatile terpenes from the essential oils are transferred into breast milk selectively. The highest M/P values (>3.5) were predicted for β-caryophyllene, aromadendrene, alloaromadendrene, and 1,4- and 1,8-cineole, high values for carvacrol (M/P = 3.2), eugenol (M/P = 3.0) and thymol (M/P = 3.6), and moderate values for α-pinene (M/P = 2.3) and low values (M/P = 0.4) for phellandrene and limonene. Our model helps to explain and expand on the current knowledge of volatile compounds in breast milk by predicting that a variety of volatile terpenoids can be found in breast milk.

Flavour and Fragrance Journal published new progress about Configurational potential. 124-76-5 belongs to class alcohols-buliding-blocks, name is rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, and the molecular formula is C10H18O, Application of rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hikawa, Hidemasa published the artcileA palladium-catalyzed dehydrative N-benzylation/C-H benzylation cascade of 2-morpholinoanilines on water, SDS of cas: 6214-45-5, the main research area is morpholinoaniline benzyl alc palladium catalyst tandem chemoselective dehydrative benzylation; diphenylethyl morpholinoaniline preparation green chem.

A strategy for the palladium-catalyzed dehydrative tandem benzylation of 2-morpholinoanilines with benzyl alcs. was developed. This cascade reaction was devised as a straightforward and efficient synthetic route for N-(1,2-diphenylethyl)-2-morpholinoanilines in moderate to good yields (50-81%). The dehydrative sp3 C-H bond benzylation proceeded chemoselectively at the benzylic position of N-benzyl-2-morpholinoaniline to form a new C(sp3)-C (sp3) bond. KIE experiments showed that C-H bond activation was involved in the rate-determining step (KIE = 2.7). A Hammett study of 2-morpholinoanilines gave a neg. ρ value, suggested that there was a build-up of pos. charge in the transition state. A “”on water”” protocol, which afforded the corresponding desired products with water as the sole co-product, can be achieved under mild reaction conditions without the need for bases or other additives in an atom-economical process.

Green Chemistry published new progress about Benzylation (chemoselective, dehydrative). 6214-45-5 belongs to class alcohols-buliding-blocks, name is (4-Butoxyphenyl)methanol, and the molecular formula is C11H16O2, SDS of cas: 6214-45-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Packiaraj, S. published the artcileDifferent coordination geometries of lighter lanthanates driven by the symmetry of guanidines as charge compensators, Synthetic Route of 110-99-6, the main research area is crystal structure guanidinium lanthanide thiodiacetate oxydiacetate preparation luminescence.

Two new related families (GunH)3[Ln(tda)3] I and (AgunH)3[Ln(oda)3]·H2O II (Ln = La, Ce, Pr, Nd and Sm, H2tda = thiodiacetic acid, H2oda = oxydiacetic acid, GunH = guanidinium, AgunH = aminoguanidinium) were successfully synthesized using a controlled process under oil-bath conditions (at 120° for a day) and characterized by various physicochem. techniques. The structures were solved for Pr and Nd in I and for La in II, resp., from x-ray diffraction data of single crystals. The isostructural complexes of (GunH)3[Pr(tda)3] and (GunH)3[Nd(tda)3] crystallize in the hexagonal crystal system with space group P6̅2c, while (AgunH)3[La(oda)3]·H2O has a triclinic symmetry with the P1̅ space group. Generally, coordination number 6 (octahedral) and 4 (tetrahedral) structures are very rare except when bulky ligands are present. Typically, the thiodiacetate (O,S,O) and oxydiacetate (O,O,O) anions act as tridentate ligands to create monomeric structures. Surprisingly, for the 1st time, the thiodiacetate anion takes a somewhat rare bidentate (O,O) mode, leading to trigonal prismatic geometry around the metal ion even for a flexible ligand, whereas the oxydiacetate dianion (oda2-) acquires the usual nine coordinated distorted monocapped square anti-prismatic (MSAP) geometry. The simultaneous TG-DTA I complexes could not be recorded due to spurting, while the type II compounds show smooth and similar thermal behavior on heating. The photoluminescent properties of I and II were studied at room temperature, which indicate that the emissions come from intra-ligand π-π* transitions.

New Journal of Chemistry published new progress about Crystal structure. 110-99-6 belongs to class alcohols-buliding-blocks, name is 2,2′-Oxydiacetic acid, and the molecular formula is C4H6O5, Synthetic Route of 110-99-6.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Patel, Twinkal published the artcileSelf-Healable Reprocessable Triboelectric Nanogenerators Fabricated with Vitrimeric Poly(hindered Urea) Networks, SDS of cas: 7575-23-7, the main research area is self healing triboelec nanogenerator vitrimeric poly hindered urea network; dynamic bulky urea chemistry; interfacial polarization; poly(hindered urea); reprocessability; self-healing; triboelectric device.

In recent years, the advent of highly deformable and healable electronics is exciting and promising for next-generation electronic devices. In particular, self-healable triboelec. nanogenerators (SH-TENGs) serve as promising candidates based on the combination of the triboelec. effect, electrostatic induction, and self-healing action. However, the majority of SH-TENGs were devised with weak polymeric networks that are healed with reversible supramol. interactions or disulfides, thus resulting in poor mech. properties and low resistance to creeping. To address this issue, the authors demonstrate the integration of mech. strong and self-healable poly(hindered urea) (PHU) network in the fabrication of effective TENGs. The designed PHU network is flexible but shows greater mech. property of tensile strength ≤1.7 MPa at break. The network is capable of self-healing quickly and repeatedly as well as being reprocessable under mild conditions, enabling the recovery of triboelec. performances after the complete healing of the damaged surfaces. Also, the interfacial-polarization-induced enhancement of dielec. constant endows SH-TENG with the highest triboelec. output performance (169.9 V/cm2) among the reported healable TENGs. This work presents an avenue to the development of mech. energy-harvesting devices and self-powered sensors with excellent stretchability, high recoverability, and good mech. strength.

ACS Nano published new progress about Triboelectric nanogenerators. 7575-23-7 belongs to class alcohols-buliding-blocks, name is Pentaerythritol tetra(3-mercaptopropionate), and the molecular formula is C17H28O8S4, SDS of cas: 7575-23-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wendeln, Christian published the artcileCarbohydrate Microarrays by Microcontact Printing, Synthetic Route of 87905-98-4, the main research area is carbohydrate microarray microcontact printing.

This Article describes the preparation of carbohydrate microarrays by the immobilization of carbohydrates via microcontact printing (μCP) on glass and silicon substrates. To this end, diene-modified carbohydrates (galactose, glucose, mannose, lactose, and maltose) were printed on maleimide-terminated self-assembled monolayers (SAMs). A Diels-Alder reaction occurred exclusively in the contact area between stamp and substrate and resulted in a carbohydrate pattern on the substrate. It was found that cyclopentadiene-functionalized carbohydrates could be printed within minutes at room temperature, whereas furan-functionalized carbohydrates required long printing times and high temperatures By successive printing, microstructured arrays of up to three different carbohydrates could be produced. Immobilization and patterning of the carbohydrates on the surfaces was investigated with contact angle measurements, XPS, time-of-flight secondary ion mass spectrometry (TOF-SIMS), and fluorescence microscopy. Furthermore, the lectins Con A (ConA) and peanut agglutinin (PNA) bind to the microarrays, and the printed carbohydrates retain their characteristic selectivity toward these proteins.

Langmuir published new progress about Carbohydrates Role: ARG (Analytical Reagent Use), BUU (Biological Use, Unclassified), PEP (Physical, Engineering or Chemical Process), RCT (Reactant), SPN (Synthetic Preparation), TEM (Technical or Engineered Material Use), ANST (Analytical Study), USES (Uses), BIOL (Biological Study), PROC (Process), RACT (Reactant or Reagent), PREP (Preparation) (diene-modified). 87905-98-4 belongs to class alcohols-buliding-blocks, name is Benzyl (5-hydroxypentyl)carbamate, and the molecular formula is C13H19NO3, Synthetic Route of 87905-98-4.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Cui, Hui-Ya published the artcileEngineering noble-metal-free metal-organic framework composite catalyst for efficient CO2 conversion under ambient conditions, COA of Formula: C8H14O, the main research area is copper bromide zeolite catalyst CO2 propargylamine propargyl alc cycloaddition.

The cyclization of propargylic alcs. and propargylic amines with CO2 are of great significance since the generated O/N-containing cyclic skeletons are extensively employed in pharmaceutical chem. and industrial production However, most of the reported catalysts only effectively catalyze propargylic alcs. or propargylic amines with CO2, and often involve noble-metal catalysts, high temperature and CO2 pressure. It is a great challenge that non-noble-metal catalysts catalyzed both propargylic alcs. and propargylic amines with CO2 under ambient conditions. Herein, CuBr@NH2-MIL-101 was successfully synthesized by loading CuBr nanoparticles into zeolite-type NH2-MIL-101 via simple thermal conversion method, and it displayed highly selective CO2 uptake properties. Importantly, CuBr@NH2-MIL-101 featured high catalytic activity for carboxylative cyclization of both propargylic alcs. and propargylic amines with CO2 under ambient conditions (25°C, 0.1 MPa CO2), resp. Moreover, CuBr@NH2-MIL-101 can be recycled at least three times without significant decline in catalytic activity. The combination explorations of NMR, FTIR and 13C isotope labeling experiments clearly illustrate the reaction process and mechanism. The d. functional theory (DFT) calculations uncover that CuBr and 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) can synergistically activate substrates, and the proton-demetalation step with the highest energy barrier was the rate-determining step in two catalytic systems. To our knowledge, it is the first report of noble-metal-free catalyst that can simultaneously catalyze CO2 conversion with propargylic alcs. and propargylic amines under room temperature and atm. CO2 pressure.

Chemical Engineering Journal (Amsterdam, Netherlands) published new progress about Amines, propargyl Role: PEP (Physical, Engineering or Chemical Process), PRP (Properties), RCT (Reactant), PROC (Process), RACT (Reactant or Reagent). 107-54-0 belongs to class alcohols-buliding-blocks, name is 3,5-Dimethylhex-1-yn-3-ol, and the molecular formula is C8H14O, COA of Formula: C8H14O.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Wang, Jiatong published the artcileInsights into crucial odourants dominating the characteristic flavour of citrus-white teas prepared from citrus reticulata Blanco ‘Chachiensis’ and Camellia sinensis ‘Fudingdabai’, HPLC of Formula: 124-76-5, the main research area is Citrus Camellia white tea odorant flavor; Aroma quantification; Characterized odourants; Citrus-white tea; Odour activity value; SBSE-GC-O/MS.

Citrus-white teas (CWs), which possess a balanced flavor of tea and citrus, are becoming more popular worldwide; however, their characteristic flavor and odourants received limited research. Volatile components of two types of CWs prepared from Citrus reticulata Blanco’Chachiensis’ and Camellia sinensis ‘Fudingdabai’ were comprehensively investigated using a combination of stir bar sorptive extraction and gas chromatog.-mass spectrometry (GC-MS). Ninety-nine crucial odourants in the CWs were quantified by applying GC-olfactometry/MS, significant differences were compared, and their odor activity values (OAVs) were calculated Twenty-two odourants (in total 2628.09 and 1131.18 mg/kg resp.) were further confirmed as traditional CW (CW-A) and innovated CW (CW-B) characteristic flavor crucial contributors which all possessed > 1 OAVs, particularly limonene (72919 in CW-A) and trans-β-ionone (138953 in CW-B). The unravelling of CWs aroma composition will greatly expanding our understanding of tea aroma chem. and the potential aroma interactions will offer insights into tea blending technologies.

Food Chemistry published new progress about Alcohols Role: ANT (Analyte), BSU (Biological Study, Unclassified), FFD (Food or Feed Use), ANST (Analytical Study), BIOL (Biological Study), USES (Uses). 124-76-5 belongs to class alcohols-buliding-blocks, name is rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, and the molecular formula is C10H18O, HPLC of Formula: 124-76-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Gao, Xianli published the artcileEnhancing selenium and key flavor compounds contents in soy sauce using selenium-enriched soybean, Recommanded Product: 3-(Methylthio)propan-1-ol, the main research area is soybean soy sauce selenium flavor.

Selenium (Se) deficiency has become a global health threat. Se-enriched soybean was utilized to develop a Se-enriched soy sauce (SeSS), and the effects of Se-enriched soybean on the flavor compounds in SeSS were characterized with HPLC and SPME-GC-olfactometry/MS. Results showed that the contents of total selenium (11.1-fold), organic selenium (10.6-fold), small peptides (≤1 kDa, 25.4%), free amino acids (FAAs, 8.67%) and 22 aroma-active compounds in SeSS were significantly enhanced when compared to soy sauce prepared using ordinary soybean (SS, p < 0.05). Only the contents of 4-vinylguaiacol and acetic acid in SeSS were decreased by 30.5% and 17.7%. Further investigations found that Se-enriched soybean markedly enhanced the activities of acidic and alk. proteases in the koji and moromi (p < 0.05), which made more proteins and large peptides degrade into small peptides, sweet and bitter FAAs. Se-enriched soybean moromi promoted the reproduction of aroma-producing Lactobacillus plantarum and Zygosaccharomyces rouxii, and more aroma-active compounds were detected in SeSS. 4-Vinylguaiacol was reduced to 4-ethylguaiacol by L. plantarum and acetic acid was converted into acetate via esterification. The work developed a widely accessible selenium supplement and a novel method to improve the flavor of soy sauce. Journal of Food Composition and Analysis published new progress about Alcohols Role: ANT (Analyte), BSU (Biological Study, Unclassified), FFD (Food or Feed Use), ANST (Analytical Study), BIOL (Biological Study), USES (Uses). 505-10-2 belongs to class alcohols-buliding-blocks, name is 3-(Methylthio)propan-1-ol, and the molecular formula is C4H10OS, Recommanded Product: 3-(Methylthio)propan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Yu, Zhihui published the artcileComparative analysis of lipid profiles and flavor composition of marinated eggs from different species, Synthetic Route of 124-76-5, the main research area is chicken quail pigeon marinated egg flavor lipid.

This study compared lipid profiles and volatile composition in marinated eggs from different species (chicken, quail, and pigeon) using LC-ESI-MS/MS, and GC-MS, resp. The three marinated eggs showed significant differences in phosphatidylcholine, phosphatidylethanolamine (PE), and neutral lipid profiles of the three marinated eggs. Pigeon-eggs contained the highest content of PE but the lowest content of triglycerides. Seventy-six potential lipid metabolites such as Cer(d18:1/21:0), DG(15:0/18:2), and PE-O(16:1/18:2) were selected for the discrimination of all three groups. Pigeon-eggs contained the highest contents of C18:2 and C22:6, as well as n-3 and n-6 PUFA than quail-eggs and chicken-eggs. Major compounds including 2-Nonanone, 1-Octen-3-ol, and cyclic octaat. sulfur have greatly contributed to the distinction of eggs from different species. The highest levels of aldehydes, acids, and ketones were found in chicken-eggs. This study reported that lipidomic and volatile composition anal. are promising approaches for discriminating of marinated eggs from different species. Novelty impact statement : This is the first study that aiming at comparing the lipid profiles and volatile composition in marinated eggs from different species (chicken, quail, and pigeon) using LC-ESI-MS/MS and GC-MS. Pigeon-eggs contained the highest contents of glycerol phospholipid, n-3, and n-6 PUFA. The predominating volatile compositions of marinated eggs were alcs. aldehydes acids and ketones. Therefore, this study provides a better understanding of the quality of marinated eggs, and help customers to better choose higher nutritional values of marinated eggs.

Journal of Food Processing and Preservation published new progress about Alcohols Role: ANT (Analyte), BSU (Biological Study, Unclassified), FFD (Food or Feed Use), ANST (Analytical Study), BIOL (Biological Study), USES (Uses). 124-76-5 belongs to class alcohols-buliding-blocks, name is rel-(1R,2R,4R)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-ol, and the molecular formula is C10H18O, Synthetic Route of 124-76-5.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts