Reactivity of functionalized diphosphiranes and 1,3-diphosphapropenes towards Grignard reagents
作者:R. El-Ouatib、C. Garot、G. Etemad-Moghadam、M. Koenig
DOI:10.1016/0022-328x(92)85044-w
日期:1992.9
The reaction of saturated and unsaturated organomagnesium compounds with the monohalogenated diphosphiranes, 1a-b, and their isomers, the 1,3-diphosphapropenes, 2a-b, leads to a series of substituted 1,3-diphosphapropenes and 1,3-diphosphadienes 4-8 (a-b), but with the dihalogeno-derivatives 1c-d and 2c-d, it gives quantitative yields of 1,3-diphospha-allene 9. The reaction occurs via an anionic ring-opening
饱和和不饱和有机镁化合物与单卤代二膦1a - b及其异构体1,3-二磷丙烯2a - b的反应生成一系列取代的1,3-二磷丙烯和1,3-二磷二烯4 - 8(一- b),但与二卤代衍生物1C - d和2C - d,它给1,3-二磷杂-丙二烯的定量产率9。发生反应经由涉及烯丙基阴离子中间的阴离子开环11A -b,通过31 P NMR检测。