Arylvanadium-verbindungen XI. Zur reaktion von trimesitylvanadium mit ketonen
作者:G. Kreisel、W. Seidel
DOI:10.1016/s0022-328x(00)99479-8
日期:1984.1
Trimesitylvanadium in solution reacts with a series of ketones. Depending upon the structures of the ketones these reactions yield olefins, alcohols or a radical, respectively. Sterically hindered ketones only form coordination compounds with trimesitylvanadium or do not react at all.
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.