Catalyst-Free Dehydrative α-Alkylation of Ketones with Alcohols: Green and Selective Autocatalyzed Synthesis of Alcohols and Ketones
作者:Qing Xu、Jianhui Chen、Haiwen Tian、Xueqin Yuan、Shuangyan Li、Chongkuan Zhou、Jianping Liu
DOI:10.1002/anie.201308642
日期:2014.1.3
Direct dehydrative α‐alkylation reactions of ketones with alcohols are now realized under simple, practical, and green conditions without using external catalysts. These catalyst‐free autocatalyzed alkylation methods can efficiently afford useful alkylated ketone or alcohol products in a one‐pot manner and on a large scale by CC bond formation of the in situ generated intermediates with subsequent
Reaction condition controlled nickel(<scp>ii</scp>)-catalyzed C–C cross-coupling of alcohols
作者:Meng-Juan Zhang、Hong-Xi Li、David J. Young、Hai-Yan Li、Jian-Ping Lang
DOI:10.1039/c9ob00418a
日期:——
methodology employing a Ni(II) 4,6-dimethylpyrimidine-2-thiolate cluster catalyst under different reaction conditions. This catalyst could tolerate a wide range of substrates and exhibited a high activity for the annulation reaction of secondary alcohols with 2-aminobenzyl alcohols to yield quinolines. This work is an example of precise chemoselectivity control by careful choice of reaction conditions.
Ruthenium Phosphine–Pyridone Catalyzed Cross-Coupling of Alcohols To form α-Alkylated Ketones
作者:Apurba R. Sahoo、Gummidi Lalitha、V. Murugesh、Christian Bruneau、Gangavaram V. M. Sharma、Surisetti Suresh、Mathieu Achard
DOI:10.1021/acs.joc.7b02042
日期:2017.10.6
An efficient and green route to access diverse functionalized ketones via dehydrogenative–dehydrative cross-coupling of primary and secondary alcohols is demonstrated. Selective and tunable formation of ketones or alcohols is catalyzed by a recently developed proton responsive ruthenium phosphine–pyridone complex. Light alcohols such as ethanol could be used as alkylating agents in this methodology
A new Mn‐catalyzed alkylation of secondary alcohols with non‐activated alcohols is presented. The use of a stable and well‐defined manganese pincer complex, stabilized by a PNN ligand, together with a catalytic amount of base enabled the conversion of renewable alcohol feedstocks to a broad range of higher‐value alcohols in good yields with water as the sole byproduct. The strategy eliminates the need