Utilization of the ArH-PCl<sub>3</sub>-AlCl<sub>3</sub>Reaction Product as the Source of Phosphorus in the Phosphetane Synthesis of McBride,<i>et al</i>.
作者:En-yun Yao、Jerzy Szewczyk、Louis D. Quin
DOI:10.1055/s-1987-27910
日期:——
A variation of the phosphetane 1-oxide synthesis of McBride, et al., is described, in which, instead of arylphosphonous dihalide, the in situ reaction of arenes with phosphorus trichloride-aluminum trichloride is used in a one-pot approach. Reaction of the complex formed with 3,3-dimethyl-1-butene or 2,4,4-trimethyl-2-pentene results in the formation of cis/trans mixtures of 1-aryl-2,2,3-trimethylphosphetane 1-oxides or 1-aryl-2,2,3,4,4-pentamethylphosphetane 1-oxides, respectively, in which the trans isomer predominates.
McBride等人提出的膦嗪1-氧化物合成方法的一种变体被描述,其中,取代使用芳基膦二卤化物,采用一种一步法,利用芳烃与三氯化磷-三氯化铝的现场反应。将所形成的复合物与3,3-二甲基-1-丁烯或2,4,4-三甲基-2-戊烯反应,分别生成1-芳基-2,2,3-三甲基膦嗪1-氧化物或1-芳基-2,2,3,4,4-五甲基膦嗪1-氧化物的顺反异构体混合物,其中反式异构体占主导。