Cobalt(II)chloride catalysed acylation of anisole with variety of acid chlorides proceeds via an acyl radical to give p-acylated anisoles in good yields.
Gold Meets Rhodium: Tandem One-Pot Synthesis of β-Disubstituted Ketones via Meyer–Schuster Rearrangement and Asymmetric 1,4-Addition
作者:Max M. Hansmann、A. Stephen K. Hashmi、Mark Lautens
DOI:10.1021/ol4011739
日期:2013.7.5
An asymmetric one-pot tandem Au/Rh-catalyzed synthesis of highly enantioenriched β-disubstituted ketones starting from racemic propargyl alcohols is disclosed. The compatibility of the two metal complexes (Au/Rh) and their orthogonal ligand systems (NHC/diene) in this bimetallic catalytic system is investigated.
Magnesium-Promoted Reductive Carboxylation of Aryl Vinyl Ketones: Synthesis of γ-Keto Carboxylic Acids
作者:Suhua Zheng、Tianyuan Zhang、Hirofumi Maekawa
DOI:10.1021/acs.joc.2c00557
日期:2022.6.3
Direct reductive carboxylation of easily prepared aryl vinylketones under the atmosphere of carbon dioxide led to the selective formation of γ-keto carboxylic acids in 38–86% yields. The reaction is characterized by the carbon–carbon bond formation of carbon dioxide at the β-position of enone, with the use of magnesium turnings that can be easily handled as the reducing agent and the eco-friendly