Arylation and Vinylation of α-Diazocarbonyl Compounds with Boroxines
摘要:
An alternative approach for alpha-arylation and alpha-vinylation of carbonyl compounds is described: reaction between aryl- or vinylboroxines with alpha-diazocarbonyl compounds leads to the formation of alpha-arylated or alpha-vinylated carbonyl compounds under mild conditions.
allyl–aryl coupling of readily accessible arylboron reagents with a broad range of olefins. Allylic arylation was achieved without the need for prefunctionalized alkenes, and the general Heck-type reactivity between olefins and arenes was not observed. Mechanistic studies indicate that the reaction was enabled through the fast generation of a RhIII–allyl species via undirected C(sp3)–H activation. Moreover
Arylation and Vinylation of α-Diazocarbonyl Compounds with Boroxines
作者:Cheng Peng、Wei Zhang、Guobing Yan、Jianbo Wang
DOI:10.1021/ol900362d
日期:2009.4.2
An alternative approach for alpha-arylation and alpha-vinylation of carbonyl compounds is described: reaction between aryl- or vinylboroxines with alpha-diazocarbonyl compounds leads to the formation of alpha-arylated or alpha-vinylated carbonyl compounds under mild conditions.