Thio-Michael addition of thioamides and allenes for the selective construction of polysubstituted 2-arylthiophenes via TBAI/H2O2 promoted tandem oxidative annulation and 1,2-sulfur migration
TBAI/H2O2 promoted tandem thio-Michael addition/oxidative annulation and the 1,2-sulfur migration transformation protocol to construct polysubstituted 2-arylthiophenes.