Tag: M.W=100-150

Yalcinkaya, Sueleyman; Cakmak, Didem; Seymen, Kuebra; Demetguel, Cahit published the artcile< Electrochemical synthesis and characterization of poly (o-amino benzyl alcohol) and poly (o-amino benzyl alcohol-co-o-anisidine)>, Synthetic Route of 5344-90-1, the main research area is electrochem synthesis polyamino benzyl alc anisidine copolymer.

In this study; poly (o-amino benzyl alc.) and poly (o-amino benzyl alc.-co-o-anisidine) copolymer films were electrochem. synthesized by cyclic voltammetry technique on the platinum electrode. The synthesis of copolymer films was achieved in various monomers feed ratio (o-amino benzyl alc.: o-anisidine; 8:2, 1:1, 2:8) of o-amino benzyl alc. and o-anisidine. Different solution types were tested in aqueous and non-aqueous media, especially during the synthesis process, as the electrolyte medium. As a result of the experiments, it was determined that sulfuric acid solution was the most suitable solution for both homopolymer and copolymer film growth. Homopolymer and copolymer samples were characterized by FT-IR, cyclic voltammetry (CV), SEM, digital images and TGA/DTA techniques. The CV, SEM and digital images results indicated that the solution which has high ratio of monomer is more effective in copolymer film synthesis mechanism. TGA results showed that the 1:1 copolymer film had higher thermal stability than the films at other monomer ratios. Also, electrochem. studies exhibited that the copolymer film in 1:1 ratio is partially more electrochem. stable than other copolymer films.

Journal of Applied Polymer Science published new progress about Conducting polymers. 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Synthetic Route of 5344-90-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Donthireddy, S. N. R.; Singh, Vivek Kumar; Rit, Arnab published the artcile< A heteroditopic NHC and phosphine ligand supported ruthenium(II)-complex: an effective catalyst for the N-alkylation of amides using alcohols>, Name: (2-Aminophenyl)methanol, the main research area is alkylation aromatic amide aralkyl alc ruthenium chelate carbene catalyst; ruthenium imidazolylidene triazolylidene mesoionic carbene preparation amide alkylation catalyst; secondary aromatic amide benzyl preparation alkylation arenemethanol ruthenium catalyst.

A ruthenium(II) complexes [(p-cymene)RuCl(1-MeIm-3-CH2Trz-1-C6H4R)] (Im = 2-imidazolylidene, Trz = 1,2,3-triazol-4-yl-5-ylidene; R = 2,4,6-Me3, 4-MeO, 4-CF3) supported by chelate NHC and mesoionic carbene ligands in combination with a diphosphine ligand (dppe, dppf) was shown to be a highly effective catalyst for the N-alkylation of diverse aromatic amides ArCONH2 using readily available primary aralkyl alcs. Ar1CH2OH, yielding N-benzylamides ArCONHCH2Ar1 (Ar, Ar1 = substituted Ph, pyridyl, thienyl, naphthyl). A wide range of secondary amides was thus obtained in excellent yields (up to 98%) employing a low catalyst loading of 0.2 mol% and a substoichiometric amount of base. The 1H NMR and ESI-MS analyses support the participation of a N-heterocyclic carbene and phosphine supported Ru-H species in the catalytic cycle and the mechanistic studies including the deuterium labeling experiment suggest the involvement of a borrowing hydrogen protocol. Addnl., the present catalytic system was also revealed to be efficient for the selective mono-alkylation and unsym. di-alkylation of 4-aminobenzamides which have not been studied before to the extent of our knowledge.

Catalysis Science & Technology published new progress about Alkylation catalysts. 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Name: (2-Aminophenyl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

da Silva, Mateus V. C.; Souza, Amanda B.; de Castro, Heizir F.; Aguiar, Leandro G.; de Oliveira, Pedro C.; de Freitas, Larissa published the artcile< Synthesis of 2-ethylhexyl oleate catalyzed by Candida antarctica lipase immobilized on a magnetic polymer support in continuous flow>, Reference of 104-76-7, the main research area is ethylhexyl oleate Candida antarctica lipase immobilization; Esterification; Immobilized lipase; Kinetic modeling; Magnetic polymer; Packed-bed reactor.

This study investigated the synthesis of 2-ethylhexyl oleate catalyzed by Candida antarctica lipase immobilized on magnetic poly(styrene-co-divinylbenzene) particles in a continuous packed-bed bioreactor. Runs were carried out in a solvent-free system at 50°C. The performance of the reactor was evaluated for substrates composed by oleic acid and 2-ethylhexanol at five molar ratios (1:4-4:1), determining its operation limits in terms of substrate flow rate. The system performance was quantified for three different flow rates corresponding to space-time between 3 and 12 h. For each condition, the influence of the space-time in the ester formation, esterification yield and productivity was determined The molar ratio of acid-to-alc. interfered, in a remarkable way, in the formation of 2-ethylhexyl oleate and the best performance was attained for substrate at equimolar ratio running at 12 h space-time. Under this condition, average 2-ethylhexyl oleate concentration was 471.65 ± 2.98 g L-1 which corresponded to ester productivity of 23.16 ± 0.49 mmol g-1 L-1 h-1. This strategy also gave high biocatalyst operational stability, revealing a half-life time of 2063 h. A model based on the ping-pong Bi-Bi mechanism was developed to describe the kinetics of the esterification reaction and validated using exptl. data. The goodness of fit of the model was satisfactory (R2 = 0.9310-0.9952).

Bioprocess and Biosystems Engineering published new progress about Growth, microbial. 104-76-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H18O, Reference of 104-76-7.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Semeniuchenko, Volodymyr; Sharif, Sepideh; Day, Jonathan; Chandrasoma, Nalin; Pietro, William J.; Manthorpe, Jeffrey; Braje, Wilfried M.; Organ, Michael G. published the artcile< (DiMeIHeptCl)Pd: A Low-Load Catalyst for Solvent-Free (Melt) Amination>, Electric Literature of 5344-90-1, the main research area is halobenzene amine palladium catalyst aryl amination; phenyl amine preparation.

(DiMeIHeptCl)Pd, a hyper-branched N-aryl Pd NHC catalyst, was shown to be efficient at performing amine arylation reactions in solvent-free (“”melt””) conditions. The highly lipophilic environment of the alkyl chains flanking the Pd center served as lubricant to allow the complex to navigate through the paste-like environment of these mixtures The protocol was used on a multi-gram scale to make a variety of aniline derivatives, including substrates containing alc. moieties.

Journal of Organic Chemistry published new progress about Amination. 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Electric Literature of 5344-90-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Balamurugan, Gunasekaran; Balaji, Sundarraman; Ramesh, Rengan; Bhuvanesh, Nattamai S. P. published the artcile< Synthesis and Structures of Arene Ruthenium (II)-NHC Complexes: Efficient Catalytic α-alkylation of ketones via Hydrogen Auto Transfer Reaction>, Formula: C7H9NO, the main research area is arene ruthenium heterocyclic compound complex preparation; aryl alkyl ketone alkanol ruthenium catalyst chemoselective alkylation; alkyl aryl ketone preparation; hydroxymethyl aniline ketone ruthenium catalyst heterocyclization; quinoline preparation.

A panel of six new arene Ru (II)-NHC complexes (NHC = 1,3-diethyl-(5,6-dimethyl)benzimidazolin-2-ylidene, 1,3-dicyclohexylmethyl-(5,6-dimethyl)benzimidazolin-2-ylidene and 1,3-dibenzyl-(5,6-dimethyl)benzimidazolin-2-ylidene) were synthesized from the transmetallation reaction of Ag-NHC with [(η6-arene)RuCl2]2 and characterized. The ruthenium (II)-NHC complexes were developed as effective catalysts for α-alkylation of ketones and synthesis of bioactive quinoline using primary/amino alcs. as coupling partners resp. The reactions were performed with 0.5 mol% catalyst load in 8 h under aerobic condition and the maximum yield was up to 96%. Besides, the different alkyl wingtips on NHC and arene moieties were studied to differentiate the catalytic robustness of the complexes in the transformations.

Applied Organometallic Chemistry published new progress about Alkylation catalysts, regioselective. 5344-90-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C7H9NO, Formula: C7H9NO.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Brocklehurst, Cara E.; Laumen, Kurt; La Vecchia, Luigi; Shaw, Duncan; Vogtle, Markus published the artcile< Diastereoisomeric Salt Formation and Enzyme-Catalyzed Kinetic Resolution as Complementary Methods for the Chiral Separation of cis-/trans-Enantiomers of 3-Aminocyclohexanol>, SDS of cas: 6850-39-1, the main research area is aminocyclohexanol chiral separation diastereomeric salt formation enzymic kinetic resolution.

This contribution demonstrates the preparative-scale synthesis of (1S,3S)-3-aminocyclohexanol by either enzymic kinetic resolution of Cbz-protected 3-aminocyclohexanols or direct diastereoisomeric salt formation with (R)-mandelic acid. The salt formation demonstrates how a single enantiomer, (1S,3S)-3-aminocyclohexanol (R)-mandelate, can be effectively isolated from the cis/trans racemic mixture and subsequently converted to the free amine, (1S,3S)-3-aminocyclohexanol, by ion-exchange chromatog. We have also demonstrated how the other three enantiomers of 3-aminocyclohexanol can be prepared by either diastereoisomeric salt formation or enzymic kinetic resolution

Organic Process Research & Development published new progress about Chiral resolution (by diastereomeric salt formation). 6850-39-1 belongs to class alcohols-buliding-blocks, and the molecular formula is C6H13NO, SDS of cas: 6850-39-1.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hashimoto, Toru; Ishimaru, Toshiya; Shiota, Keisuke; Yamaguchi, Yoshitaka published the artcile< Bottleable NiCl2(dppe) as a catalyst for the Markovnikov-selective hydroboration of styrenes with bis(pinacolato)diboron>, Reference of 403-41-8, the main research area is nickel dppe complex catalyst Markovnikov hydroboration styrene bispinacolatodiboron.

Although transition-metal-catalyzed hydroboration reactions of alkenes have been extensively studied, only three examples using Ni complexes have been reported so far. In this study, we have examined hydroboration reactions of alkenes using Ni/phosphine complexes. The com. available and bottleable complex NiCl2(dppe) (dppe = 1,2-bis(diphenylphosphino)ethane) serves as a catalyst for the highly Markovnikov-selective hydroboration of styrene derivatives that affords the desired Markovnikov products in high yield.

Chemical Communications (Cambridge, United Kingdom) published new progress about Hydroboration catalysts. 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Reference of 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Chardon, Aurelien; Rouden, Jacques; Blanchet, Jerome published the artcile< Borinic Acid Mediated Hydrosilylations: Reductions of Carbonyl Derivatives>, Synthetic Route of 403-41-8, the main research area is borinic acid mediated hydrosilylation reduction ketone aldehyde imine.

4-Fluoro-2-chlorophenylborinic acid acts as a precatalyst in the presence of phenylsilane for the facile reduction of ketones, aldehydes and imines. Notably, synergistic mediation of a tertiary amine was found essential to trigger silicon to boron hydride transfer to generate a key amine-diarylhydroborane Lewis complex.

European Journal of Organic Chemistry published new progress about Aldehydes Role: RCT (Reactant), RACT (Reactant or Reagent). 403-41-8 belongs to class alcohols-buliding-blocks, and the molecular formula is C8H9FO, Synthetic Route of 403-41-8.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Hu, Jingcheng; Zeng, Li; Hu, Jiayu; Ma, Rui; Liu, Xue; Jiao, Ying; He, Haoyu; Chen, Siyu; Xu, Zhexi; Wang, Hongfei; Lei, Aiwen published the artcile< Electrochemical Difunctionalization of Terminal Alkynes: Access to 1,4-Dicarbonyl Compounds>, Name: (4-Ethynylphenyl)methanol, the main research area is dicarbonyl compound preparation; terminal alkyne ketoester electrochem difunctionalization.

Herein, a feasible electrosynthesis method to access 1,4-dicarbonyl compounds such as I [R = Ph, 4-MeC6H4, 2-thienyl, etc.; R1 = Me, OMe, OEt, Oi-Pr; R2 = Me; R3 = Me; R2R3 = (CH2)3, (CH2)4, (CH2)5] had been developed from simple alkynes and 1,3-dicarbonyl compounds When the undivided cell was combined with the constant current mode, aryl alkynes containing numerous medicinal motifs with 1,3-dicarbonyl esters or ketones reacted smoothly. External oxidant and catalyst-free conditions conformed to the requirements of green synthesis.

Organic Letters published new progress about Alkynes, α- Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 10602-04-7 belongs to class alcohols-buliding-blocks, and the molecular formula is C9H8O, Name: (4-Ethynylphenyl)methanol.

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts

Qi, Xinghao; Zheng, Tingting; Zhou, Junhao; Dong, Yanhong; Zuo, Xia; Li, Xiaoyan; Sun, Hongjian; Fuhr, Olaf; Fenske, Dieter published the artcile< Synthesis and Catalytic Activity of Iron Hydride Ligated with Bidentate N-Heterocyclic Silylenes for Hydroboration of Carbonyl Compounds>, HPLC of Formula: 403-41-8, the main research area is iron silylene amidine supported hydride complex preparation hydroboration catalyst; aldehyde ketone hydroboration pinacolboronate preparation alc iron silylene catalyst; crystal structure iron silylene amidine supported hydride complex; mol structure iron silylene amidine supported hydride complex.

We report the synthesis of a novel bidentate N-heterocyclic silylene (NHSi) ligand, N-(LSi:)-N-methyl-2-pyridinamine (1) (L = PhC(NtBu)2), and the first bischelate disilylene iron hydride I, [(Si,N)(Si,C)Fe(H)(PMe3)] (2, R = tBu), and monosilylene iron hydride, [(Si,C)Fe(H)(PMe3)3] (2′), through Csp2-H activation of the NHSi ligand. Compounds 1 and 2 were fully characterized by spectroscopic methods and single-crystal X-ray diffraction anal. D. functional theory calculations indicated the multiple-bond character of the Fe-Si bonds and the π back-donation from Fe(II) to the Si(II) center. Moreover, the strong donor character of ligand 1 enables 2 to act as an efficient catalyst for the hydroboration reaction of carbonyl compounds at room temperature Chemoselective hydroboration is attained under these conditions. This might be the first example of hydroboration of ketones and aldehydes catalyzed by a silylene hydrido iron complex. A catalytic mechanism was suggested and partially exptl. verified.

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

Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts