developed for the novel functionalization of allenyl esters. First, new phosphazenes derived from trifluorodiazoethane and phosphines were generated and reacted with allenyl esters to give unexpected α‐iminophosphoranes through the creation of C=P, C=N, and C−H bonds at the α‐, β‐, and γ‐carbon atoms, respectively, of the allenyl esters. The α‐iminophosphoranes did not react with aldehydes in a classic Wittig
开发了一种伸缩工艺,该工艺涉及将四种试剂(三
氟重氮乙烷,膦,烯丙基酯和
乙酸)连续添加到单个反应器中,以实现烯丙基酯的新型功能化。首先,生成了衍生自三
氟重氮乙烷和膦的新
磷腈并与烯丙基酯反应,通过在α-,β-和γ-上形成C = P,C = N和C-H键,产生了意想不到的α-亚
氨基正膦烯丙基酯的碳原子。在经典的维蒂希反应中,α-亚
氨基正膦不与醛反应,而是获得了β-烯
氨基酯。反应的全部顺序提供了烯丙基酯的正式加氢
肼化反应。该方法扩展到其他相关的重氮化合物,并用于制备新型5-
吡唑啉酮衍
生物。