tetramethyl-α-halo-enamines is reported. Primary allylic and primary and secondary propargylic alcohols gave the corresponding halides in high yields. Secondary allylic and propargylic alcohols yielded the corresponding secondary halides but the reaction also produced some rearranged primary halides (I > Br > Cl). The reactions with tertiary allylic and tertiary propargylic alcohols gave several products and was
报告了
烯丙醇和炔
丙醇与四甲基-α-卤代烯胺脱氧卤化的研究。伯
烯丙醇和伯和仲炔
丙醇以高产率得到相应的卤化物。仲
烯丙醇和炔
丙醇产生相应的仲卤化物,但该反应也产生了一些重排的伯卤化物(I > Br > Cl)。与叔
烯丙醇和叔炔
丙醇的反应产生了几种产物,因此几乎没有合成价值。然而,向反应混合物中加入
三乙胺或使用醇
锂代替醇导致反应过程发生重大变化,导致在 C 2 上带有烯丙基或烯丙基的酰胺。. 这被证明是由中间体 α-烯丙氧基-或炔丙氧基-烯胺的 Claisen-Eschenmoser 重排引起的。