A novel three‐component condensation reaction of benzotriazoles, aldehydes and tertiary anilines efficiently catalyzed by readily available organic acid p‐toluenesulfonic acid (PTSA) has been developed. A series of N‐alkyl benzotriazoles were synthesized in up to 97% yield for 21 examples starting from anilines, benzotriazoles and formaldehyde. This strategy features a simple system, atom economy,
已经开发出一种新型的三组分苯并三唑,醛和叔
苯胺的缩合反应,该反应可通过现成的有机酸
对甲苯磺酸(
PTSA)有效地催化。从
苯胺,苯并三唑和
甲醛开始,合成了21个实例的一系列N-烷基苯并三唑,收率高达97%。该策略的特点是系统简单,原子经济,环境友好,效率高,区域选择性好,官能团耐受性好,原料易得,催化剂便宜。机理研究表明,氮杂苯醌甲基化物可能作为这种转化的中间体。