作者:Stephen J. Dwight、Sergiy Levin
DOI:10.1021/acs.orglett.6b02635
日期:2016.10.21
A one-step, operationally simple protocol for the synthesis of isomerically pure rhodamine dyes from phthalaldehydic acids is reported. Using a mixture of 2,2,2-trifluoroethanol and water as reaction media allows for clean and efficient formation of various rhodamines as a single isomer. This method was successfully applied to the synthesis of several isomerically pure rhodamines, including 6-carb
报道了一种从邻苯二酸合成异构纯罗丹明染料的一步操作简单的方案。使用2,2,2-三氟乙醇和水的混合物作为反应介质可以清洁有效地形成各种若丹明,使其成为单一异构体。该方法已成功应用于克规模的几种异构纯罗丹明的合成,包括6-羧基四甲基罗丹明和6-羧基-X-罗丹明(6-CXR)。还描述了一种简单的,一步一步的Pd催化的羟基羰基化方法,用于从适当取代的二卤代苯并甲醛中制取邻苯二酸。