Pt/Al2O3 and Pt/TiO2 were effective catalysts for the synthesis of 2-substituted benzothiazoles and benzimidazoles from 2-aminothiophenol and 1,2-phenylenediamine with alcohols or aldehydes under acceptor-free and additive-free conditions.
Pt / Al 2 O 3和Pt / TiO 2是在无受体和无添加剂条件下,由2-
氨基
硫酚和1,2-
苯二胺与醇或醛合成2-取代的
苯并噻唑和
苯并咪唑的有效催化剂。