苯甲酰氧基取代的2-吡喃酮的固相光二聚反应

摘要

以二苯甲酮为光敏化剂,C4-位苯甲酰氧基取代的6-甲基-2-吡喃酮(1)的固相光二聚反应穿过1的C3-C4双键高选择性地发生[2+2]环加成反应合成了anti头-头二聚物(2),其结构经1H NMR,FI-IR,MS和元素分析表征.反应机理利用WINMOPAC PM5方法推定.%Anti head-head dimers (2) was synthesized by solid-state photodimerization reactions of substituted 6-methy-2-pyrones with or benzoxy(1) using benzophenone as the photosensitizer through high selectively [2 +2] cycloaddition across the C3-C4 double bond in 1.The structures were identified by 1H NMR,FI-IR,MS and elemental analysis.The reaction mechanism was infered by WIN-MOPAC PM5 method.