A Facile Synthesis of 1,2-Divinylcycloalkanols and Their Behavior in the Oxy-Cope Rearrangement
作者:Tetsuya Kato、Hisao Kondo、Masaki Nishino、Minoru Tanaka、Go Hata、Akihisa Miyake
DOI:10.1246/bcsj.53.2958
日期:1980.10
2-chlorocycloalkanones with vinylmagnesium chloride gives 1,2-divinylcycloalkanols. Divinylation proceeds via a rearrangement of initially formed 2-chloro-1-vinylcycloalkanols to 2-vinylcycloalkanones followed by further vinylation of 2-vinylcycloalkanones. Thermal sigmatropic rearrangement of 1,2-divinylcycloalkanols gives 5-cycloalken-1-ones in good yields. The influence of the size of rings on the
2-氯环烷酮与乙烯基氯化镁反应生成1,2-二乙烯基环烷醇。二乙烯基化通过最初形成的 2-氯-1-乙烯基环烷醇重排为 2-乙烯基环烷酮,然后 2-乙烯基环烷酮的进一步乙烯基化而进行。1,2-二乙烯基环烷醇的热sigmatropic重排以良好的产率得到5-环烯-1-酮。讨论了环的大小对反应途径的影响。