Organophosphorus compounds - 601. Reactions of phosphatriafulvenes with nucleophilic partners
作者:Eberhard Fuchs、Fred Krebs、Heinrich Heydt、Manfred Regitz
DOI:10.1016/s0040-4020(01)80791-2
日期:1994.1
phosphaalkenes with inverse electron density - react primarily at the three-membered ring with nucleophilic reagents. From their reactions with organolithium compounds 2a-c and Grignard reagents 5a,b the cyclopropenylphosphines 4a-f are obtained after addition of chlorotrimethylsilane; of these products only 4a, d, and e were isolated and characterized. Methanolysis of products 4a-f yields the primary (7a-d) and
磷富集烯1a,b-具有相反电子密度的磷烯烃-主要在三元环上与亲核试剂反应。从它们与有机锂化合物2a-c和格氏试剂5a,b的反应中,在加入氯代三甲基硅烷后得到环丙烯基膦4a-f。在这些产物中,只有4a,d和e被分离和鉴定。产物4a-f的甲醇分解通过PSi键的裂解产生伯膦(9a -d)和仲膦(9a,b)。化合物1b与乙胺10a,b反应通过裂解三元环得到1-磷-1,3,5-己二酮11a(X射线结构)和11b。相同的磷酰富马烯与环丁二烯17a,b反应,最初得到2-磷杂双环己烯18a,b,在室温下于氯仿中搅拌后,进行[2 + 2]环还原,得到开链异构体20a,b。