The addition of Grignardreagents to ketones is significantly enhanced by cerium chloride with remarkable suppression of side reactions, particularly enolization. Some esters, which are prone to side reactions, also react readily with Grignardreagents in the presence of cerium chloride to give normal reaction products in reasonable to high yields.
USE OFCERIUM(III) CHLORIDE IN THE REACTIONS OF CARBONYL COMPOUNDS WITH ORGANOLITHIUMS OR GRIGNARD REAGENTS FOR THE SUPPRESSION OF ABNORMAL REACTIONS:1-BUTYL-1,2,3,4-TETRAHYDRO-1-NAPHTHOL
作者:Takeda, Nobuhiro、Imamoto, Tsuneo
DOI:10.15227/orgsyn.076.0228
日期:——
Palladium-Catalyzed 2-Pyridylmethyl Transfer from 2-(2-Pyridyl)ethanol Derivatives to Organic Halides by Chelation-Assisted Cleavage of Unstrained Csp3Csp3 Bonds
作者:Takashi Niwa、Hideki Yorimitsu、Koichiro Oshima
DOI:10.1002/anie.200604472
日期:2007.4.2
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