Cyanoguanidine as a versatile, eco-friendly and inexpensive reagent for the synthesis of 2-aminobenzoxazoles and 2-guanidinobenzoxazoles
作者:Oleksandr Grytsai、Tetiana Druzhenko、Luc Demange、Cyril Ronco、Rachid Benhida
DOI:10.1016/j.tetlet.2018.03.036
日期:2018.4
An effective, easy-to-handle, safe and inexpensive protocol is reported for the synthesis of 2-aminobenzoxazoles under Lewis acid activation, utilising cyanoguanidine as the cyanating reagent. An optimized procedure for the synthesis of 2-guanidinobenzoxazole and novel derivatives is also described.
据报道,在有效的路易斯酸活化下,利用氰基胍作为氰化试剂合成2-氨基苯并恶唑,是一种有效,易于操作,安全且廉价的方案。还描述了合成2-胍基苯并恶唑和新型衍生物的优化方法。