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。