Sodium borohydride in an acetonitrile medium: An efficient reagent for reductive Beckmann type fragmentation of α-amino oximes
作者:Pavel A. Petukhov、Alexey V. Tkachev
DOI:10.1016/s0040-4020(96)01142-8
日期:1997.2
When treated with sodium borohydride in boiling acetonitrile, α-amino oximes are transformed to the corresponding ω-amino nitriles in 31–87% yield. Easily available α-amino oximes with cyclohexane, methylcyclohaxene, p-menthane, carane, pinane, and caryophyllane carbon skeletons are tested. The reaction was found to proceed only in an aliphatic nitrile medium; the specific role of a nitrile is discussed
当在沸腾的乙腈中用硼氢化钠处理时,α-氨基肟以31-87%的产率转化为相应的ω-氨基腈。测试了具有环己烷,甲基环己烯,对-薄荷烷,car烷,pin烷和石竹兰碳骨架的易于获得的α-氨基肟。发现该反应仅在脂族腈介质中进行。讨论了腈的具体作用。贝克曼同步机制被确认为裂解阶段,然后还原了中间体铵盐。