O-silylated ketene acetal chemistry; β-(alkoxycarbonyl)methyl O-silyl enolates, useful synthons for α-substituted-β-(alkoxycarbonyl)methylalkanones
作者:Y. Kita、J. Segawa、J. Haruta、T. Fujii、Y. Tamura
DOI:10.1016/0040-4039(80)80176-6
日期:1980.1
Conjugate addition of O-silylated ketene acetals to α,β-unsaturated carbonyl compounds in acetonitrile gave quantitative yields of the corresponding β-(alkoxycarbonyl)methyl O-silyl enolates . Site specific electrophilic substitutions of yielded the corresponding α-substituted β-(alkoxycarbonyl)-methylalkanones , , and .
在乙腈中将O-硅烷化的乙烯酮缩醛共轭添加到α,β-不饱和羰基化合物中,可定量获得相应的β-(烷氧基羰基)甲基O-甲硅烷基烯醇化物。位点特异性的电取代得到相应的α取代的β-(烷氧羰基)-methylalkanones ,,和。