Unusual ligaecl-depeecleet chemoselective Suzuki-Miyaura cross-coupling reactions of 3-bromo-4-trifloyl-thiophenes

摘要

An unusual ligand-dependent chemoselective Suzuki-Miyaura cross-coupling reaction for 3-bromo-4-trifloyl-thiophenes was discovered. Pd(PPh3)4 showed selectivity for triflate over bromide, whereas the selectivity was reversed for Pd(~tBu3P)2.