N-(1-butylvinyl)-(2b) and N-(1-methyl-1-pentenyl) iminotriphenylphosphoranes (2c) were prepared by the reaction of azidoethylene and 2-azido-1-hexene with triphenylphosphine, respectively. The thermal reaction of 2a, 2b, and 2c with α,β-unsaturated ketones undergoes an enamine-type alkylation and the subsequent aza-Wittig reaction to give pyridine derivatives in modest yields.
                                    新型 N-
乙烯基-(2a) 以及 N-(1-丁基
乙烯基)-(2b) 和 N-(1-甲基-1-
戊烯基) 亚
氨基
三苯基膦 (2c) 的混合物是通过
叠氮乙烯和 2-
叠氮基-
1-己烯分别与
三苯基膦。2a、2b 和 2c 与 α,β-不饱和酮的热反应经历烯胺型烷基化和随后的氮杂-维蒂希反应,以中等产率得到
吡啶衍生物。