2-Mercaptobenzothiazolylmethylpyrrole as a new means for the synthesis of pyrromethanes under neutral conditions

Article abstract of DOI:10.1016/S0040-4039(98)00201-9

The coupling reaction of 2-mercaptobenzothiazolylmethylpyrrole 4b with α-free pyrrole 2b in the presence of silver (I) triflate proceeds smoothly at room temperature to give pyrromethane 1b in excellent yield. 4b reacts rapidly with pyrromethane 1b under