【摘要】 报道了闪式真空热解法 (FlashVacuumPyrolysis)合成取代的苯并环丁二酮。由取代苯酐经NaBH4 还原得取代的羟基苯酞 ,其三氟乙酸酯在 50 0～ 550℃及 1 3 3～ 1 3 3 3Pa下经石英管热解 ,得相应的取代苯并环丁二酮 ,产率中等更多还原

【Abstract】 Several substituted benzocyclobutenediones were prepared via flash vacuum pyrolysis. Substituted phthalide was treated with trifluoroacetic anhydride. The trifluoroacetate were then pyrolysed at 500～550℃/13 3～133 3Pa. The benzocyclobutenediones were obtained in multi\|grams scale with fair yields.更多还原