作者:Haodong Duan、Xiaolei Xu、Kangwei Leng、Ge Guo、Qing Yu、Xinjin Li、Yuxi Han、Jun Gao、Zhongwei Wang
DOI:10.1016/j.apcata.2020.117943
日期:2021.2
reacted with PCl3 to form DCPP-AlCl3, and DCPP-AlCl3 dissociated into DCPP and AlCl3, continuing to catalyze this reaction. This resulted in the high catalytic efficiency of AlCl3. The layering of the reaction solution was caused by the immiscibility of DCPP-AlCl3 with the raw materials, greatly facilitating the dissociation process of DCPP-AlCl3. The formation of diphenylphosphorus chloride (DPC) was due
研究了在AlCl 3存在下经由苯和PCl 3制备二氯苯基膦(DCPP)的反应特性。当使用催化量的AlCl 3时,观察到一些独特的特征。即,相对于每摩尔AlCl 3获得多于1摩尔的DCPP ,将反应溶液分层,并且可以直接分离DCPP。我们的机理研究表明,苯与PCl 3反应形成DCPP-AlCl 3,并且DCPP-AlCl 3解离为DCPP和AlCl 3,继续催化该反应。这导致AlCl 3的高催化效率。反应溶液的分层是由于DCPP-AlCl 3与原料的不混溶引起的,极大地促进了DCPP-AlCl 3的离解过程。氯化二苯基磷(DPC)的形成是由于DCPP与苯之间的连续Friedel-Crafts反应。DPC与AlCl 3共同形成稳定的配位化合物DPC-AlCl 3,该化合物不会解离,并负责AlCl 3的失活。