Treatment of Ï-azido acid chlorides with trimethylsilyl azide affords Ï-azido isocyanates which can be easily converted in good yields to the corresponding Ï-azidoamines or Ï-azidocarbamates. 1,3- and 1,4-Diamine dihydrochlorides can then be prepared by catalytic hydrogenation or reductive alkylation with an organodichloroborane.
用三
甲基硅叠氮化物处理 Ï-azido 酸
氯化物,可得到 Ï-azido
异氰酸酯,这些
异氰酸酯很容易以良好的产率转化成相应的 Ï-azidoamines 或 Ï-azidocarbamates。然后,通过催化
氢化或有机二
氯硼烷还原烷基化,可制备 1,3-和 1,4-二胺二
氢氯化物。