A FACILE ROUTE TO MACROCYCLIC KETONES. DIRECT DIVINYLATION OF 2-CHLOROCYCLODODECAN-1-ONE
作者:Masaki Nishino、Hisao Kondo、Akihisa Miyake
DOI:10.1246/cl.1973.667
日期:1973.7.5
2-divinylcyclododecan-1-ol, which was easily converted to 5-cyclohexadecen-1-one. This one-step divinylation was found to proceed not through a direct displacement of the Grignard reagent with the chlorine atom, but through a pinacol-like rearrangement of a vinyl group.
2-chlorocyclododecan-1-one 与乙烯基氯化镁(摩尔比为 1:2)反应直接得到 1,2-divinylcyclododecan-1-ol,它很容易转化为 5-cyclohexadecen-1-one。发现这种一步二乙烯基化不是通过用氯原子直接置换格氏试剂,而是通过乙烯基的频哪醇样重排进行。