The reaction of aryl(halo)platinum(II)(bpy) complexes with thiophene derivatives causes novel electrophilic substitution in the presence of AgNO 3 /KF as an activator to form thienyl complexes in 65-91% yields. The related reaction with (dihalo)-platinum(II) also takes place to afford dithienylplatinum(II) complexes.
Electrophilic Substitution of Thiophenes with Arylpalladium(II) and Platinum(II) Complexes: Mechanistic Studies on Palladium-Catalyzed CH Arylation of Thiophenes
作者:Atsushi Sugie、Hirotoshi Furukawa、Yuji Suzaki、Kohtaro Osakada、Munetaka Akita、Daiki Monguchi、Atsunori Mori
DOI:10.1246/bcsj.82.555
日期:2009.5.15
Mechanisticstudies on palladium-catalyzed CH arylation of thiophenes which has been shown by our group are carried out by a stoichiometric reaction of organometallic complexes. The reaction of arylpalladium(II) halide with 2,3-dibromothiophene in the presence of AgNO 3 /KF as an activator induces electrophilic substitution at the CH bond of the thiophene to give CH arylated product. The similar reaction