Category: alcohols-buliding-blocks

Stavber, Stojan published the artcileNew, mild method for direct introduction of a fluorine atom into aromatic molecules, Synthetic Route of 596-38-3, the publication is Journal of the Chemical Society, Chemical Communications (1992), 274-5, database is CAplus.

Hydroxyalkyl groups in various aromatic mols. are replaced with a fluorine atom by CsSO₄F at room temperature, regioselectively forming aryl fluorides in high to excellent yields. Thus, reaction of CsSO₄F with 4-methoxybenzyl alc. in MeCN gives 4-methoxyfluorobenzene in 70% yield.

Journal of the Chemical Society, Chemical Communications 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 C14H12O2, Synthetic Route of 596-38-3.

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

Chatzopoulou, Maria published the artcileClauson-Kaas-type synthesis of pyrrolyl-phenols, from the hydrochlorides of aminophenols, in the presence of nicotinamide, Recommanded Product: 4-(1H-Pyrrol-1-yl)phenol, the publication is Synthetic Communications (2013), 43(21), 2949-2954, database is CAplus.

A facile Clauson-Kaas-type pyrrolyl-phenol synthesis was achieved in the presence of nicotinamide, which is inexpensive and nontoxic. The starting material is aminophenol hydrochloride. This is advantageous in certain cases because it is the only isolable form of the corresponding aminophenol.

Synthetic Communications published new progress about 23351-09-9. 23351-09-9 belongs to alcohols-buliding-blocks, auxiliary class Pyrrole,Benzene,Alcohol, name is 4-(1H-Pyrrol-1-yl)phenol, and the molecular formula is C10H9NO, Recommanded Product: 4-(1H-Pyrrol-1-yl)phenol.

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

Arla, Rambabu published the artcileDevelopment and validation of stability-indicating gas chromatography method for the quantitative determination of ethylhexylglycerin and its impurities in bulk and pharmaceutical dosage forms, Synthetic Route of 70445-33-9, the publication is Asian Journal of Pharmaceutics (2018), 12(1Suppl.), S243-S250, database is CAplus.

A stability-indicating gas chromatog. flame ionization detection (FID) method for the quant. determination of ethylhexylglycerin (EHG) and its impurities in drug substance and drug product has been developed and validated. The developed method was also applied to related substances identification in the bulk sample. The chromatog. separation was performed on a fused silica capillary (DB-1, 30 m, 0.32 mm, and 0.25μm film thickness) column, and with a gradient technique. The column oven was programmed as follows: Initial column oven temperature, 60°C; ramped linearly to 280°C at the rate of 8°C/min; hold for 10 min. The runtime of anal. was 30 min. The injector and detector temperature was kept at 240°C and 260°C, resp. Nitrogen was used as a carrier gas with a constant flow rate of 2 mL/min. The split ratio was set at 20: Results and Discussion: The developed method was validated as per the ICH guidelines. The stability-indicating nature of the method has been proved by establishing peak purity and confirming the mass balance of all samples by subjecting them to stress conditions such as hydrolysis, oxidation, photolysis, and thermal degradation studies. The method was successfully applied to anal. of different bulk sample of EHG and its impurities. The proposed gas chromatog. coupled with FID method was also found to be specific and selective for the anal. of com. formulation samples.

Asian Journal of Pharmaceutics published new progress about 70445-33-9. 70445-33-9 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic Chain, name is 3-((2-Ethylhexyl)oxy)propane-1,2-diol, and the molecular formula is C11H24O3, Synthetic Route of 70445-33-9.

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

Ulaszewska, Maria M. published the artcileTwo apples a day modulate human:microbiome co-metabolic processing of polyphenols, tyrosine and tryptophan., Synthetic Route of 621-37-4, the publication is European Journal of Nutrition (2020), 59(8), 3691-3714, database is CAplus and MEDLINE.

Methods: Using an untargeted metabolomics approach, we aimed to identify biomarkers of long-term apple intake and explore how apples impact on the human plasma and urine metabolite profiles. Forty mildly hypercholesterolemic volunteers consumed two whole apples or a sugar and energy-matched control beverage, daily for 8 wk in a randomized, controlled, crossover intervention study. The metabolome in plasma and urine samples was analyzed via untargeted metabolomics. Results: We found 61 urine and 9 plasma metabolites being statistically significant after the whole apple intake compared to the control beverage, including several polyphenol metabolites that could be used as BFIs. Furthermore, we identified several endogenous indole and phenylacetyl-glutamine microbial metabolites significantly increasing in urine after apple consumption. The multiomic dataset allowed exploration of the correlations between metabolites modulated significantly by the dietary intervention and fecal microbiota species at genus level, showing interesting interactions between Granulicatella genus and phenyl-acetic acid metabolites. Phloretin glucuronide and phloretin glucuronide sulfate appeared promising biomarkers of apple intake; however, robustness, reliability and stability data are needed for full BFI validation. Conclusion: The identified apple BFIs can be used in future studies to assess compliance and to explore their health effects after apple intake.

European Journal of Nutrition published new progress about 621-37-4. 621-37-4 belongs to alcohols-buliding-blocks, auxiliary class Carboxylic acid,Benzene,Phenol,Natural product, name is 3-Hydroxyphenylacetic acid, and the molecular formula is C8H8BFO2, Synthetic Route of 621-37-4.

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

Pieckowski, Michal published the artcileCombination of large volume sample stacking with polarity switching and cyclodextrin electrokinetic chromatography (LVSS-PS-CDEKC) for the determination of selected preservatives in pharmaceuticals, Recommanded Product: trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride, the publication is Talanta (2020), 120673, database is CAplus and MEDLINE.

In this study, a large volume sample stacking (LVSS) with polarity switching (PS) and cyclodextrin electrokinetic chromatog. (CDEKC) method has been developed for the simultaneous separation and determination of 8 preservatives: methylparaben (MP), ethylparaben (EP), propylparaben (PP), butylparaben (BP), isobutylparaben (IBP), sorbic acid (SA), benzoic acid (BA), p-hydroxybenzoic acid (PHBA) in pharmaceuticals. The effects of some typical parameters such as sample volume, applied voltage, composition and pH of the running buffer and organic modifier concentration were examined and optimized. Moreover, the impact of type and concentration of cyclodextrin as electrolyte modifiers was also investigated. The detection limits of analytes for the elaborated LVSS-PS-CDEKC method were found to be in 0.8-5 ng mL^-1 range, which were around 500 times lower than normal CDEKC without preconcentration technique. All analytes were completely resolved in less than 11 min in an uncoated fused-silica capillary of 75μm internal diameter (I.D) x 50 cm length. The electrophoretic separation was performed in a 2 mM α-cyclodextrin and 25 mM tetraborate system (pH = 9.3) with an applied voltage of 25 kV. The established method was validated and confirmed to be applicable for the determination of the preservatives in a quality control of pharmaceuticals.

Talanta 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, Recommanded Product: trans-4-((2-Amino-3,5-dibromobenzyl)amino)cyclohexanol hydrochloride.

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

Gonzalez-Gil, Lorena published the artcileBiotransformation of organic micropollutants by anaerobic sludge enzymes, Quality Control of 85618-21-9, the publication is Water Research (2019), 202-214, database is CAplus and MEDLINE.

Biotransformation of organic micropollutants (OMPs) in wastewater treatment plants ultimately depends on the enzymic activities developed in each biol. process. However, few research efforts have been made to clarify and identify the role of enzymes on the removal of OMPs, which is an essential knowledge to determine the biotransformation potential of treatment technologies. Therefore, the purpose of the present study was to investigate the enzymic transformation of 35 OMPs under anaerobic conditions, which have been even less studied than aerobic systems. Initially, 13 OMPs were identified to be significantly biotransformed (>20%) by anaerobic sludge obtained from a full-scale anaerobic digester, predestining them as potential targets of anaerobic enzymes. Native enzymes were extracted from this anaerobic sludge to perform transformation assays with the OMPs. In addition, the effect of detergents to recover membrane enzymes, as well as the effects of cofactors and inhibitors to promote and suppress specific enzymic activities were evaluated. In total, it was possible to recover enzymic activities towards 10 out of these 13 target OMPs (acetyl-sulfamethoxazole and its transformation product sulfamethoxazole, acetaminophen, atenolol, clarithromycin, citalopram, climbazole, erythromycin, and terbutryn, venlafaxine) as well as towards 8 non-target OMPs (diclofenac, iopamidol, acyclovir, acesulfame, and 4 different hydroxylated metabolites of carbamazepine). Some enzymic activities likely involved in the anaerobic biotransformation of these OMPs were identified. Thereby, this study is a starting point to unravel the still enigmatic biotransformation of OMPs in wastewater treatment systems.

Water Research published new progress about 85618-21-9. 85618-21-9 belongs to alcohols-buliding-blocks, auxiliary class Tetrahydropyran,Chiral,sulfides,Alcohol, name is (2R,3S,4S,5R,6S)-2-(Hydroxymethyl)-6-(octylthio)tetrahydro-2H-pyran-3,4,5-triol, and the molecular formula is C14H28O5S, Quality Control of 85618-21-9.

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

Ziegler, Felix published the artcileConfinement Effects for Efficient Macrocyclization Reactions with Supported Cationic Molybdenum Imido Alkylidene N-Heterocyclic Carbene Complexes, Synthetic Route of 111-29-5, the publication is ACS Catalysis (2021), 11(18), 11570-11578, database is CAplus.

For entropic reasons, the synthesis of macrocycles via olefin ring-closing metathesis (RCM) is impeded by competing acyclic diene metathesis (ADMET) oligomerization. With cationic molybdenum imido alkylidene N-heterocyclic carbene (NHC) complexes confined in tailored ordered mesoporous silica, RCM can be run with macrocyclization selectivities up to 98% and high substrate concentrations up to 0.1 M. Mol. dynamics simulations show that the high conversions are a direct result of the proximity between the surface-bound catalyst, proven by extended X-ray absorption spectroscopy, and the surface-located substrates. Back-diffusion of the macrocycles decreases with decreasing pore diameter of the silica and is responsible for the high macrocyclization efficiency. Also, Z-selectivity increases with decreasing pore diameter and increasing Tolman electronic parameter of the NHC. Running reactions at different concentrations allows for identifying the optimum substrate concentration for each material and substrate combination.

ACS Catalysis published new progress about 111-29-5. 111-29-5 belongs to alcohols-buliding-blocks, auxiliary class Aliphatic hydrocarbon chain,Alcohol,Ploymers, name is Pentane-1,5-diol, and the molecular formula is C8H17Br, Synthetic Route of 111-29-5.

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

Gago-Ferrero, Pablo published the artcileSuspect Screening and Regulatory Databases: A Powerful Combination To Identify Emerging Micropollutants, Product Details of C9H21NO3, the publication is Environmental Science & Technology (2018), 52(12), 6881-6894, database is CAplus and MEDLINE.

This study demonstrates that regulatory databases combined with the latest advances in high resolution mass spectrometry (HRMS) can be efficiently used to prioritize and identify new, potentially hazardous pollutants being discharged into the aquatic environment. Of the approx. 23000 chems. registered in the database of the National Swedish Product Register, 160 potential organic micropollutants were prioritized through quant. knowledge of market availability, quantity used, extent of use on the market, and predicted compartment-specific environmental exposure during usage. Advanced liquid chromatog. (LC)-HRMS-based suspect screening strategies were used to search for the selected compounds in 24 h composite samples collected from the effluent of three major wastewater treatment plants (WWTPs) in Sweden. In total, 36 tentative identifications were successfully achieved, mostly for substances not previously considered by environmental scientists. Of these substances, 23 were further confirmed with reference standards, showing the efficiency of combining a systematic prioritization strategy based on a regulatory database and a suspect-screening approach. These findings show that close collaboration between scientists and regulatory authorities is a promising way forward for enhancing identification rates of emerging pollutants and expanding knowledge on the occurrence of potentially hazardous substances in the environment.

Environmental Science & Technology 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, Product Details of C9H21NO3.

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

Hurd, Charles D. published the artcileThienol, Quality Control of 17236-59-8, the publication is Journal of the American Chemical Society (1950), 5543-6, database is CAplus.

Thiophene-2-ol (I) was obtained by oxidizing 2-thienylmagnesium bromide (16.3 g. 2-bromothiophene, 18.5 g. iso-PrBr, and 6.5 g. Mg in 200 cc. ether) with dry O at 0°, hydrolyzing the product with dilute H₂SO₄, saturating with NaCl, and extracting the aqueous solution and the ether solution with 20% NaOH; 25% I, light yellow liquid, b₆ 80-84°, and 29% 2,2′-bithiophene, were obtained. I was vacuum-distilled in N; the colorless center fraction on cooling formed long needles, m. 7-9°, b₇₆₀ 217-19° (in N), d²⁰₄ 1.255, n²⁰_D 1.5644, mol. refraction 25.93, soluble in hexane 42%, in H₂O 6%, miscible in all other common solvents. Also prepared were the acetate, solidified at -10° to -20°; benzoate, fine colorless crystals, m. 44-5°; Me 2-thienyl ether, 5-phenylazothienolophene-2-ol, m. 120-25°, and 2(or 4)-benzylidene-3(or 2)-butenothiolactone, m. 97.5-8.5°. The infrared and ultraviolet spectra gave evidence that I exists as keto-enol tautomers. It gives a red color with FeCl₃, is a weak acid, undergoes characteristic reactions of the phenolic OH group, and reacts readily with diazotized amines in alk. solution The presence of the thiolactone was indicated by ring fission occurring in warm acid or alkali or during methylation with MeI or Me₂SO₄, and by the ready condensation with BzH. Under conditions sufficient for quant. monobromination of phenol, I consumed 1/3 equivalent of Br. Oxidation of 3-thienylmagnesium bromide gave a low yield of a steam-volatile liquid, very weakly acidic, having a phenolic odor and giving an intense vermilion with FeCl₃; it apparently coupled with diazotized aniline. It is suggested that this compound was thiophene-3-ol.

Journal of the American Chemical Society published new progress about 17236-59-8. 17236-59-8 belongs to alcohols-buliding-blocks, auxiliary class Thiophene,Alcohol, name is Thiophen-3-ol, and the molecular formula is C4H4OS, Quality Control of 17236-59-8.

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

Scott, W. E. published the artcileVernonia anthelmintica. Effect of storage on the epoxy content of the seed oil and trivernolin, Recommanded Product: 2,5-Bis(2,4,4-trimethylpentan-2-yl)benzene-1,4-diol, the publication is Journal of the American Oil Chemists’ Society (1965), 42(2), 147-9, database is CAplus.

V. anthelmintica seeds from India and Pakistan varied somewhat in the amount of oil that they contained, but the oils did not vary significantly in their epoxy content. Storage of the whole seed for periods of up to 3 years did not affect the quality of the oil, but the activity of the seed enzyme system seemed to increase with time. Free fatty acid (I) develops rapidly after the seed is ground. The epoxy content of low-I V. anthelmintica oil and trivernolin changed only slightly when these products were stored at room temperature for 6 months. The viscosity of the samples that were exposed to light increased greatly, indicating changes in the phys. nature of the products. A similar behavior was exhibited by both products when they were stored under N at 100° and by trivernolin at 4°.

Journal of the American Oil Chemists’ Society 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 C6H4ClNO2, 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