申请人:Eli Lilly and Company
公开号:US04175087A1
公开(公告)日:1979-11-20
.alpha.,.beta.-Unsaturated ketones and aldehydes, together with a method of preparation thereof which comprises reacting aldehydes and cyclic and acyclic ketones possessing a methyl or methylene group .alpha.- to the carbonyl function with N,N-dialkylformamide dialkyl acetal to yield the corresponding enaminoketones and enaminoaldehydes, which enaminoketones and enaminoaldehydes are allowed to react with alkyllithium reagents to yield the corresponding nitrogen-free 2-alkylidene ketones and 2-alkylidene aldehydes.
本发明涉及.alpha.,.beta.-不饱和酮和醛,以及其制备方法,其包括将具有甲基或亚甲基基团的环状和非环状酮和醛与N,N-二烷基甲酰胺二烷基缩醛反应,以产生相应的烯胺酮和烯胺醛,然后将这些烯胺酮和烯胺醛与烷基锂试剂反应,以产生相应的无氮2-烷基亚甲基酮和2-烷基亚甲基醛。