作者:T. Gajda、A. Zwierzak
DOI:10.1016/s0040-4020(01)96737-7
日期:1985.1
The addition of DCPA to several conjugated 1,3-dienes has been studied. The reaction was found to proceed in dichloromethane and was spontaneously or photolytically initiated depending on the structure of the dienes. N-chloro adducts, formed upon addition, could be reduced “in situ” with sodium sulphite solution to give the corresponding diethyl N-(chloroalkenyl)posphoroamidates. Addition of DCPA to
已经研究了将DCPA添加到几种共轭的1,3-二烯中。发现该反应在二氯甲烷中进行并且取决于二烯的结构是自发或光解引发的。加成后形成的N-氯加合物可以用亚硫酸钠溶液“原位”还原,得到相应的N-(氯烯基)正膦酰胺二乙基酯。在末端双键1,3-二烯(丁二烯,异戊二烯和2,3-二甲基-1,3-丁二烯)上添加DCPA会导致区域特异性生成(E)-1,4-加合物。类似地,对于1,3-环己二烯也观察到1,4-加成。DCPA与非末端双键1,3-二烯(反式-戊二烯,4-甲基-1,3-戊二烯,2,5-二甲基-2,4-己二烯和1,4-二苯基-1,3-丁二烯)通常提供加合物的混合物。介绍了与DCPA加成产物的结构证明有关的光谱数据和化学转化。讨论了一种可能的加法机制。