Sequence of Reactant Combination Alters the Course of the Staudinger Reaction of Azides with Acyl Derivatives. Bimanes. 30.
作者:Deborah E. Shalev、Stella M. Chiacchiera、Annette E. Radkowsky、Edward M. Kosower
DOI:10.1021/jo950273q
日期:1996.1.1
iminophosphorane 3a from the azidobimane 1. Reaction of the bimane P-tri-2-furyliminophosphorane with acyl chloride gives only the (acylamido)bimane 6. If the acyl chloride is mixed with 1, followed by addition of the Ph(3)P, the triazaphosphadiene adduct 5 is formed via the triazaphosphadiene. The adduct 5 is converted rapidly into a six-membered cyclic compound 11. The latter either loses nitrogen to yield
叠氮化物的施陶丁格反应现在已经通过NMR和其他光谱技术进行了跟踪。syn-(叠氮基甲基,甲基)(甲基,甲基)二manemane(1)和Ph(3)P形成三氮杂磷二烯中间体2,然后形成bimane P-三苯基亚氨基正膦3.亚氨基正膦与酰氯反应生成亚氨基phosph盐4然后形成氧杂磷杂环丁烷13。后者进行电环转化以形成氧化膦和氯亚胺7E和7Z,最后被水解成(酰氨基)二manemane6。这组反应构成了“亚氨基磷烷途径”。通过4与CDCl(3)中存在的H(2)O的反应以及通过3与HCl的反应,发生了反应路线向(N-烷基氨基)氯化8 8的明显转移。不同的叠氮化物(α-叠氮基-邻二甲苯1b)生产的(酰基酰胺基)-邻二甲苯为唯一产品。位阻较少的膦(三-2-呋喃基膦)反应较慢,由叠氮基双mane 1形成亚氨基膦3a。二mane P-tri-2-furyliminophosphorane与酰氯的反应仅生成(酰基酰胺基)二manemane