作者:Apurba Datta、Hiriyakkanavar Ila、Hiriyakkanavar Junjappa
DOI:10.1016/s0040-4020(01)87716-4
日期:1987.1
subsequent boron-trifluoride etherate catalyzed methanolysis of the resultant carbinol acetals . Treatment of α-acetylketene dithioacetals and with methylmagnesium iodide afforded the carbinol acetals and respectively which under above sequence of reactions yielded the corresponding α-isopropylidene-γ-butyrolactones and in good yields.
对于α-arylidene高度立体选择性合成(A简便方法,和)和α亚乙基()-γ丁内酯已经由相应的α亚基-γ的酸催化内酯化,δ不饱和酯类开发。所需的酯是通过将相应的α-氧代-α-烯丙基(或取代的烯丙基)烯酮二硫缩醛与硼氢化钠进行区域选择性还原,然后将三氟化硼醚醚化催化生成的甲醇缩醛进行甲醇分解而获得的。α-acetylketene二硫治疗,并与碘化甲基提供的甲醇缩醛和分别这下反应的上述顺序得到相应的α亚异丙基γ丁内酯和以良好的收率。