نتایج جستجو برای: aliphatic alcohol
تعداد نتایج: 124397 فیلتر نتایج به سال:
Abstract Chiral aliphatic amine and alcohol derivatives are ubiquitous in pharmaceuticals, pesticides, natural products fine chemicals, yet difficult to access due the challenge differentiate between spatially electronically similar alkyl groups. Herein, we report a nickel-catalyzed enantioselective hydroalkylation of acyl enamines enol esters with halides afford enantioenriched α-branched amin...
Osmotic distillation (OD) has been a subject of interest during the last few years due to its promising application in production low alcohol strength wines. This work focuses on partial dealcoholization (-3 v/v%) red wine (tempranillo) by OD, carrying out an experimental and theoretical process analysis. The was performed using polypropylene hollow fiber module at different conditions whose in...
Nanocerium oxide mediated an efficient and green protocol has been described for the chemoselective N-tert-butyloxycarbonylation of amines under solvent-free conditions at ambient temperature. Various aliphatic, aromatic heteroaromatic were protected using developed several functional groups such as alcohol, phenol ester well tolerated these conditions. The rapid reaction rate, mild conditions,...
The aerial organs of most terrestrial plants are covered by a hydrophobic protective cuticle. The main constituent of the cuticle is the lipid polyester cutin, which is composed of aliphatic and aromatic domains. The aliphatic component is a polyester between fatty acid/alcohol and hydroxycinnamoyl acid. The BAHD/HxxxD family enzymes are central to the synthesis of these polyesters. The nature ...
aliphatic alcohols like methanol, 1-propanolol, 1-butanol, 2-butanol, isobutanol, iso-amyl alcohol and heavy meta l s espec ia l ly l ead depending on the nature of raw materials used and production techniques.11,12 Though alcohol consumption in India has existed since many through centuries, quantity, quality and pattern of consumption has undergone substant ial change especially in recent yea...
Several reagents have been employed to determine the role of the thiol groups in fumarase. The nature of the reaction of these reagents indicates that the thiol groups are not associated with active site structures but are buried in a hydrophobic environment in the interior of the enzyme. Several observations are in accord with this view. The rate of reaction of the thiol groups is much slower ...
An efficient method is described for the mild and rapid tetrahydropyranylation of alcohols and phenols using a catalytic amount of N-chlorosaccharin (1 mol %) and 3, 4-dihydro-2H-pyran under solvent-free condition at room temperature. Benzylic alcohols and phenols containing electron withdrawing or donating groups in various positions of phenyl ring, cinamyl alcohol, primary, ...
Simple, cheap and green protocol for effective conversion of alcohols to corresponding carbonyl compounds in the presence of H14[NaP5W30O110] and ammonium nitrate is reported. The products were characterized by FT-IR and comparison of their physical properties with those reported in the literatures. The progress of the reaction was monitored by thin layer chromatography (TLC) technique. The ali...
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