Tag: M.W=100-150

Zeynizadeh, Behzad; Mohammad Aminzadeh, Farkhondeh; Mousavi, Hossein published the artcile< Chemoselective reduction of nitroarenes, N-acetylation of arylamines, and one-pot reductive acetylation of nitroarenes using carbon-supported palladium catalytic system in water>, SDS of cas: 5344-90-1, the main research area is aryl amine preparation chemoselective; nitroarene reduction palladium catalyst; acyl aryl amine preparation chemoselective; arylamine acetylation palladium catalyst; reductive acetylation nitroarene palladium catalyst.

In this paper, convenient, green and efficient approaches for the chemoselective reduction of nitroarenes, N-acetylation of arylamines and one-pot reductive acetylation of nitroarenes in the presence of the recoverable heterogeneous carbon-supported palladium (Pd/C) catalytic system in water was developed. The utilize of the simple, effective and recoverable catalyst and also using of water as an entirely green solvent along with relatively short reaction times and good-to-excellent yields of the desired products were some of the noticeable features of the presented synthetic protocols.

Research on Chemical Intermediates published new progress about Acetylation. 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, SDS of cas: 5344-90-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Talik, Agnieszka; Tarnacka, Magdalena; Geppert-Rybczynska, Monika; Hachula, Barbara; Bernat, Roksana; Chrzanowska, Agnieszka; Kaminski, Kamil; Paluch, Marian published the artcile< Are hydrogen supramolecular structures being suppressed upon nanoscale confinement? The case of monohydroxy alcohols>, Recommanded Product: 2-Ethylhexan-1-ol, the main research area is monohydroxy alc silica alumina nanopore nanoconfinement; Confinement; Dielectric spectroscopy; Hydrogen bonds; Infrared spectroscopy; Interfacial energy; Monohydroxy alcohols; Self-assembly; Surface effects; Surface tension.

In this paper, the mol. dynamics, H-bonding pattern and wettability of the primary and secondary monohydroxyalcs., 2-ethyl-1-hexanol (2E1H), 2-ethyl-1-butanol (2E1B) and 5-methyl-3-heptanol (5M3H) infiltrated into native and functionalized silica and alumina pores having pore diameters, d = 4 nm and d = 10 nm, have been studied with the use of Broadband Dielec. (BDS) and Fourier Transform IR (FTIR) spectroscopies, as well as contact angle measurements. We found significant differences in the behavior of alcs. forming chain- (2E1H, 2E1B) or micelle-like (5M3H) supramol. structures despite of their similarities in the wettability and interfacial energy. It turned out that nanoassocs. as well as H-bonds are more or less affected by the confinement dependently on the chem. structure and alc. order. Moreover, a peculiar behavior of the self-assemblies at the interface was noted in the latter material (5M3H). Finally, it was found that irresp. to the sample, type of pores, functionalization, the temperature evolution of Debye relaxation times, τD, of the confined systems deviates from the bulk behavior always at similar τD due to vitrification of the interfacial layer. This finding is a clear indication that unexpectedly dynamics (mobility) of the supramol. structures close to the hydrophilic and hydrophobic surfaces is similar in each system.

Journal of Colloid and Interface Science published new progress about Contact angle. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Recommanded Product: 2-Ethylhexan-1-ol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hofmann, Natalie; Homberg, Leonard; Hultzsch, Kai C. published the artcile< Synthesis of tetrahydroquinolines via borrowing hydrogen methodology using a manganese PN3 pincer catalyst>, Reference of 5344-90-1, the main research area is tetrahydroquinoline preparation.

A straightforward and selective synthesis of 1,2,3,4-tetrahydroquinolines starting from 2-aminobenzyl alcs. and simple secondary alcs. is reported. This one-pot cascade reaction is based on the borrowing hydrogen methodol. promoted by a manganese (I) PN3 pincer complex. The reaction selectively leads to 1,2,3,4-tetrahydroquinolines thanks to a targeted choice of base. This strategy provides an atom-efficient pathway with water as the only byproduct. In addition, no further reducing agents are required.

Organic Letters published new progress about 5344-90-1. 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Reference of 5344-90-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Zhong, Mingbing; Gagne, Yohann; Hope, Taylor O.; Pannecoucke, Xavier; Frenette, Mathieu; Jubault, Philippe; Poisson, Thomas published the artcile< Copper-Photocatalyzed Hydroboration of Alkynes and Alkenes>, Computed Properties of 10602-04-7, the main research area is copper photocatalyst diphosphinoxanthene diphosphinophenoxazine phenanthroline complex preparation electrochem absorbance; hydroboration alkyne alkene copper photocatalyst preparation stereoselective regioselective mechanism; mol structure optimized boronic ester free energy enthalpy dissociation; boryl radical; continuous flow; copper; hydroboration; photocatalysis.

The photocatalytic hydroboration of alkenes and alkynes is reported. The use of newly-designed copper photocatalysts with B2Pin2 permits the formation a boryl radical, which is used for hydroboration of a large panel of alkenes and alkynes. The hydroborated products were isolated in high yields, with excellent diastereoselectivities and a high functional group tolerance under mild conditions. The hydroboration reactions were developed under continuous flow conditions to demonstrate their synthetic utility. The reaction mechanism was studied and suggested an oxidation reaction between an in situ formed borate and the Cu-photocatalyst in its excited state for the boryl radical formation.

Angewandte Chemie, International Edition published new progress about Activation enthalpy. 10602-04-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C9H8O, Computed Properties of 10602-04-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Fu, Xuegang; Wang, Yue; Liu, Liu; Li, Caifeng; Huang, Lin; Huang, Jianhui published the artcile< KOtBu/O2 Mediated Dehydrogenation of N-Heterocycles, Alcohols>, SDS of cas: 403-41-8, the main research area is heterocyclic compound preparation green chem; tetrahydroheterocyclic compound dehydrogenation; ketone preparation; alc dehydrogenation.

A convenient dehydrogenation of a number of N,O-containing heterocycles e.g., 1,2,3,4-tetrahydroquinoline and carbocycles RCH(OH)R1 (R = Ph, 3,4-dimethoxyphenyl, naphthalen-2-yl, pyridin-2-yl, etc.; R1 = Me, OH, t-Bu, Ph, Cy) and 1,2,3,4-tetrahydronaphthalen-1-ol with readily available inorganic base (KOtBu) and oxygen is reported. The oxidation process is proved to be an SRN1 pathway followed by a radical elimination. This radical process has opened up the possibilities for the development of new superoxide mediated synthetic methodologies using KOtBu as the single electron reductant.

ChemistrySelect published new progress about Aromatic alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, SDS of cas: 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Melchiorre, Massimo; Cucciolito, Maria Elena; Di Serio, Martino; Ruffo, Francesco; Tarallo, Oreste; Trifuoggi, Marco; Esposito, Roberto published the artcile< Homogeneous Catalysis and Heterogeneous Recycling: A Simple Zn(II) Catalyst for Green Fatty Acid Esterification>, HPLC of Formula: 104-76-7, the main research area is green fatty acid esterification homogeneous catalysis heterogeneous recycling; zinc catalyzed esterification fatty acid alc polyol.

This work describes the use of simple zinc(II) salts (ZnCl2, ZnCO3, Zn(OAc)2, ZnO, Zn(ClO4)2, Zn(TfO)2, and Zn(BF4)2) as effective catalysts for the esterification of fatty acids with long-chain alcs. and simple polyols through a homogeneous system that allows the gradual and selective removal of water. The results show that the catalytic activity depends on the nature of the counterion: the most effective are the salts with poorly coordinating anions (perchlorate and triflate) or containing basic Bronsted anions (oxide, acetate, and carbonate). However, only with the latter is it possible to fully recover the catalyst at the end of each run, which is easily filtered in the form of zinc carboxylate, given its insolubility in the ester produced. In this way, it is possible to recycle the catalyst numerous times, without any loss of activity. This beneficial prerogative couples the efficiency of the homogeneous catalysis with the advantage of the heterogeneous catalysis. The process is, therefore, truly sustainable, given its high efficiency, low energy consumption, ease of purification, and the absence of auxiliary substances and byproducts.

ACS Sustainable Chemistry & Engineering published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent). 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, HPLC of Formula: 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Ng, Teng Wei; Liao, Gang; Lau, Kai Kiat; Pan, Hui-Jie; Zhao, Yu published the artcile< Room-Temperature Guerbet Reaction with Unprecedented Catalytic Efficiency and Enantioselectivity>, Electric Literature of 403-41-8, the main research area is secondary alc preparation Guerbet catalyst enantioselectivity; Guerbet reaction; alkylation; borrowing hydrogen; enantioselectivity; higher-order alcohols.

The authors report herein an unprecedented highly efficient Guerbet-type reaction at room temperature (catalytic TON up to >6000). This β-alkylation of secondary Me carbinols with primary alcs. has significant advantage of delivering higher-order secondary alcs. in an economical, redox-neutral fashion. In addition, the first enantioselective Guerbet reaction also was achieved using a com. available chiral ruthenium complex to deliver secondary alcs. with moderate yield and up to 92% ee. In both reactions, the use of a traceless ketone promoter proved to be beneficial for the catalytic efficiency.

Angewandte Chemie, International Edition published new progress about Alcohols Role: RCT (Reactant), RACT (Reactant or Reagent) (Me carbinols). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Electric Literature of 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

P., Sreejyothi; Sarkar, Pallavi; Dutta, Supriti; Das, Arpan; Pati, Swapan K.; Mandal, Swadhin K. published the artcile< Regioselective ring-opening of epoxides towards Markovnikov alcohols: a metal-free catalytic approach using abnormal N-heterocyclic carbene>, Application In Synthesis of 403-41-8, the main research area is alkyl epoxide borabicyclononane heterocyclic carbene regioselective Markovnikov ring opening; alkanol preparation.

The first metal-free regioselective Markovnikov ring-opening of epoxides (selectivity up to 99%) using an abnormal N-heterocyclic carbene (aNHC) to yield secondary alcs was reported. DFT calculations and X-ray crystallog. suggested that the Markovnikov selectivity originated from the high nucleophilicity and steric factors associated with the aNHC.

Chemical Communications (Cambridge, United Kingdom) published new progress about Aliphatic alcohols Role: SPN (Synthetic Preparation), PREP (Preparation). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Application In Synthesis of 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hu, Yingying; Zhang, Lang; Liu, Qian; Wang, Yan; Chen, Qian; Kong, Baohua published the artcile< The potential correlation between bacterial diversity and the characteristic volatile flavour of traditional dry sausages from Northeast China>, Synthetic Route of 104-76-7, the main research area is sausage alc ketone terpene flavor Lactobacillus Weissella Northeast China; Bacterial community; HS-SPME-GC-MS; High-throughput sequencing; Traditional dry sausages; Volatile compounds.

The objective of this study was to explore the correlation between bacterial communities and volatile compounds in traditional dry sausages from different regions in Northeast China. The bacterial community structure of dry sausages from five different regions as determined by high-throughput sequencing technol. demonstrated that Firmicutes and Proteobacteria were the predominant phyla; Lactobacillus, Staphylococcus, Leuconostoc, Lactococcus and Weissella were the predominant genera; and Staphylococcus xylosus, Lactobacillus sakei, Weissella hellenica, Leuconostoc citreum, Lactococcus raffinolactis and Lactobacillus plantarum were the predominant species. Meanwhile, a total of 120 volatile compounds were detected in sausages from five different regions and mainly included alcs., acids, aldehydes, ketones, esters and terpenes. Furthermore, the potential correlations between the core bacteria and major volatile compounds (64) were explored based on Spearman’s correlation anal. Pos. correlations were found between W. hellenica, Lb. sakei, Lactococcus lactis, Lactobacillus alimentarius, Lb. plantarum and carboxylic acids and alcs. Lc. lactis, Lb. alimentarius and Lb. plantarum were associated with the production of most esters, aldehydes and ketones. This study provides a deep insight into the relationship between the bacterial community and the volatile flavor profile of dry sausages, which may be helpful for the production of fermented dry sausages.

Food Microbiology published new progress about Acidobacteria. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Synthetic Route of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Lu, Hongyuan; Yu, Shiqin; Qin, Fengyu; Ning, Wenbo; Ma, Xiaoqiang; Tian, Kaiyuan; Li, Zhi; Zhou, Kang published the artcile< A secretion-based dual fluorescence assay for high-throughput screening of alcohol dehydrogenases>, Related Products of 403-41-8, the main research area is alc dehydrogenase secretion dual fluorescence assay high throughput screening; alcohol dehydrogenase; cascade reaction; directed protein evolution; fluorescence assay; protein secretion.

Alc. dehydrogenases (ADHs) play key roles in the production of various chem. precursors that are essential in pharmaceutical and fine chem. industries. To achieve a practical application of ADHs in industrial processes, tailoring enzyme properties through rational design or directed evolution is often required. Here, we developed a secretion-based dual fluorescence assay (SDFA) for high-throughput screening of ADHs. In SDFA, an ADH of interest is fused to a mutated superfolder green fluorescent protein (MsfGFP), which could result in the secretion of the fusion protein to culture broth. After a simple centrifugation step to remove the cells, the supernatant can be directly used to measure the activity of ADH based on a red fluorescence signal, whose increase is coupled to the formation of NADH (a redox cofactor of ADHs) in the reaction. SDFA allows easy quantification of ADH concentration based on the green fluorescence signal of MsfGFP. This feature is useful in determining specific activity and may improve screening accuracy. Out of five ADHs we have tested with SDFA, four ADHs can be secreted and characterized. We successfully screened a combinatorial library of an ADH from Pichia finlandica and identified a variant with a 197-fold higher kcat/km value toward (S)-2-octanol compared to its wild type.

Biotechnology and Bioengineering published new progress about Catalysis. 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Related Products of 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts