[reaction: se text] A new Heck-type reaction under catalysis by Pd for obtaining polysubstituted arylvinylydene derivatives of porphyrin systems is reported. The coupling between the Zn(II)-protoporphyrin-IX dimethylester Zn-2 and several bromo-aryl and iodo-aryl compounds in the presence of a new Pd catalyst has been studied. This coupling reaction, although providing moderate regioselectivity, gives
[反应:正文]报道了一种新的Pd催化下的Heck型反应,用于获得
卟啉体系的多取代芳基
乙烯基衍
生物。研究了在新的Pd催化剂存在下Zn(II)-
原卟啉-IX二甲基酯Zn-2与几种
溴代芳基和
碘代芳基化合物之间的偶联。该偶合反应尽管提供适度的区域选择性,但给出了定量转化。