Cobalt-Catalyzed Acceptorless Dehydrogenative Coupling of Primary Alcohols to Esters
作者:Keshav Paudel、Bedraj Pandey、Shi Xu、Daniela K. Taylor、David L. Tyer、Claudia Lopez Torres、Sky Gallagher、Lin Kong、Keying Ding
DOI:10.1021/acs.orglett.8b01775
日期:2018.8.3
A novel catalytic system with a tripodal cobalt complex is developed for efficiently converting primaryalcohols to esters. KOtBu is found essential to the transformation. A preliminary mechanistic study suggests a plausible reaction route that involves an initial Co-catalyzed dehydrogenation of alcohol to aldehyde, followed by a Tishchenko-type pathway to ester mediated by KOtBu.
为了有效地将伯醇转化为酯,开发了具有三脚架钴络合物的新型催化体系。KO t Bu被发现对转型至关重要。初步的机理研究表明,可能的反应路线包括最初的共催化将醇脱氢成醛,然后由Tishchenko型途径由KO t Bu介导生成酯。
Pd-Catalyzed Dehydrogenative Oxidation of Alcohols to Functionalized Molecules
作者:Takamichi Mori、Chihiro Ishii、Masanari Kimura
DOI:10.1021/acs.oprd.9b00207
日期:2019.8.16
A dehydrogenative oxidation reaction of primary alcohols to aldehydes catalyzed by a simple Pd/Xantphos catalytic system was developed under an argon or nitrogen atmosphere without oxidizing agents or hydrogen acceptors. The reaction product could be easily changed: under aerobic conditions, esters were obtained in aprotic solvents, whereas the corresponding carboxylic acids were produced in aqueous
Rhodium-Catalyzed Synthesis of Imines and Esters from Benzyl Alcohols and Nitroarenes: Change in Catalyst Reactivity Depending on the Presence or Absence of the Phosphine Ligand
作者:Taemoon Song、Ji Eun Park、Young Keun Chung
DOI:10.1021/acs.joc.8b00197
日期:2018.4.6
catalyzes the reductive N-alkylation of aryl nitro compounds with alcohols by a borrowing-hydrogen strategy to afford the corresponding imine products in good to excellent yields. In the absence of xantphos, the [Rh(COD)Cl]2/Cs2CO3 catalytic system behaves as an effective catalyst for the dehydrogenative coupling of alcohols to esters, with nitrobenzene as a hydrogen acceptor. The reactivity of the
[Rh(COD)Cl] 2 / xantphos / Cs 2 CO 3系统通过借位氢策略有效催化芳基硝基化合物与醇的还原性N-烷基化,从而以良好或优异的收率提供相应的亚胺产品。在不存在黄药的情况下,[Rh(COD)Cl] 2 / Cs 2 CO 3催化体系可作为醇与酯脱氢偶联的有效催化剂,硝基苯为氢受体。铑催化体系的反应性可以很容易地控制以选择性地提供亚胺或酯。
Facile oxidative conversion of alcohols to esters using molecular iodine
作者:Naoshi Mori、Hideo Togo
DOI:10.1016/j.tet.2005.03.097
日期:2005.6
A simple, efficient, and high-yield procedure for the oxidative conversion of alcohols to various types of esters and ketones, with molecular iodine and potassium carbonate was successfully carried out.
成功地进行了一种简单,高效且高收率的方法,将醇与分子碘和碳酸钾氧化转化为各种类型的酯和酮。
Esterification of Aldehydes and Alcohols with Pyridinium Hydrobromide Perbromide in Water
作者:Shinsei Sayama、Tetsuo Onami
DOI:10.1055/s-2004-835630
日期:——
The direct esterification of aldehydes and alcohols was carried out with pyridinium hydrobromide perbromide in water at room temperature. A variety of aldehydes were converted to respective ester derivatives with alcoholssuch as methanol, 1,2-ethanediol, 1,3-propanediol. Further, a variety of aliphatic alcohols were also converted to the corresponding Tishchenko-like dimeric esters in good yields under