Grignard and hydride addition to a ketene intermediate: a novel access to α-damascone and α-cyclocitral
作者:Ferdinand Naef、Rene Decorzant
DOI:10.1016/s0040-4020(01)87388-9
日期:1986.1
synthesized by an allylmagnesium chloride addition to ketene 7 as key step. When the same ketene 7 was reduced by two different aluminiumhydride reagents, α-cyclocitral was obtained. The presumed intermediates, enolates II and III, were first trapped as silyl enol ethers and then hydrolyzed with D2O to give the expected α-monodeuterated carbonyl compounds. Mixed aluminiumhydride reduction of ketenes is recommended