A catalytic amount of tris(p-bromophenyl)aminium hexachloroantimonate promoted the substitution reactions of dimethylacetals with various silylatednucleophiles through an electron transfer mechanism. Silyl compounds include silyl enol ether, ketene silyl acetal, and allylsilane. One methoxy group of the substrates was effectively substituted by nucleophiles to form carbon-carbon bonds.
Oxidative C−C Bond-Forming Reaction of Electron-Rich Alkylbenzyl Ether with Trimethylvinyloxysilane
作者:Bai-Ping Ying、Bridget G. Trogden、Daniel T. Kohlman、Sidney X. Liang、Yao-Chang Xu
DOI:10.1021/ol036314j
日期:2004.5.1
Treatment of an electron-rich benzyl ether with DDQ at ambient temperature followed by addition of a silyl enolether undergoes a C-C bond-forming reaction to afford 3-alkoxy-3-phenyl-propionyl compound. This is a general reaction and works well with a variety of silyl enolethers to give carbonyl products in yields ranging from 10 to 85%.