نتایج جستجو برای: higher alcohols synthesis

تعداد نتایج: 1379075  

Journal: :Organic & biomolecular chemistry 2013
Chuanzhou Tao Feng Liu Youmin Zhu Weiwei Liu Zhiling Cao

Copper-catalyzed direct conversion of benzylic alcohols to aryl nitriles was realized using NH3(aq.) as the nitrogen source, O2 as the oxidant and TEMPO as the co-catalyst. Furthermore, copper-catalyzed one-pot synthesis of primary aryl amides from alcohols was also achieved.

2001
J C Slaa J G Van Ommen J R H Ross

This paper gives a review of research work in the synthesis of higher alcohols over catalysts based on Cu/ZnO/Al,O,, emphasizing three main topics: (i) the effect on selectivity of the addition of several compounds to this catalyst, (ii) the effect on selectivity of the reaction conditions used, and (iii) the reaction network leading to the different products found. Although the use of aLkali c...

Journal: :Catalysts 2022

This review is dedicated to the state-of-the art routes used for synthesis of CO2-based (a)cyclic carbonates and polycarbonates from alcohol substrates, with an emphasis on their respective main advantages limitations. The first section reviews organic such as dialkyl or cyclic carbonation alcohols. Many different synthetic strategies have been reported (dehydrative condensation, alkylation rou...

2017
Shuxin Liu Jiabin Liu Jiayin Hou Nan Chao Ying Gai Xiangning Jiang

BACKGROUND 4-Hydroxycinnamyl alcohols are a class of natural plant secondary metabolites that include p-coumaryl alcohol, caffeyl alcohol, coniferyl alcohol and sinapyl alcohol, and have physiological, ecological and biomedical significance. While it is necessary to investigate the biological pathways and economic value of these alcohols, research is hindered because of their limited availabili...

2010
Ayşegül Doğan

Esterification of several carboxylic acids with supercritical alcohols such as 1-propanol, 1butanol, 1-octanol, isoamylalcohol, ethanol, methanol, and subcritical benzyl alcohol without using any catalyst was studied. A variety of esters were synthesized very effectively using supercritical alcohols as solvent and reagent. Moderate to excellent yields were obtained depending on the nature of th...

Journal: :Journal of The Japan Petroleum Institute 2021

Iridium catalysts supported on anatase with high surface area showed excellent activities for the acceptor-less dehydrogenation synthesis of benzoxazoles from 2-aminophenol and primary alcohols. The catalytic activity greatly depended titania supports, iridium precursors, loading species. Catalysts JRC (Japan Reference Catalyst)-TIO-10 highest dehydrogenative reaction. Preparation using [Ir(cod...

Journal: :Journal of the American Chemical Society 2015
Nicklas Deibl Kevin Ament Rhett Kempe

Since alcohols are accessible from indigestible biomass (lignocellulose), the development of novel preferentially catalytic reactions in which alcohols are converted into important classes of fine chemicals is a central topic of sustainable synthesis. Multicomponent reactions are especially attractive in organic chemistry as they allow the synthesis of large libraries of diversely functionalize...

Journal: :Chirality 2017
Irshad Ahmad Shagufta Abdul Rahman AlMallah

Enantiomerically pure secondary alcohols are essential compounds in organic synthesis and are used as chiral auxiliaries and synthetic intermediates in the pharmaceutical, agrochemical, and fine chemical industries. One of the attractive and practical approaches to achieving optically pure secondary alcohols is oxidative kinetic resolution of racemic secondary alcohols using chiral Mn(III) sale...

Journal: :Organic Letters 2021

The stereocontrol of tertiary alcohols represents a recurrent challenge in organic synthesis. In the present paper, we describe simple, efficient, and indirect method to enantioselectively prepare through chiral isothiourea catalyzed selective acylation adjacent secondary alcohols. This transformation enables kinetic resolution (KR) easily prepared racemic diastereoenriched secondary/tertiary d...

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