An easy and convenient preparation of 2-amino-2-benzyl-3(2H)-benzofuranone and related compounds is described. The method utilizes the anomalous intramolecular conjugate addition of intermediate 2-amino-1-(2-hydroxyphenyl)-3-phenyl-2-propen-1-ones. 2-Benzyl-2-triphenylphosphoranylideneamino-3(2H)-benzofuranones by an analogous method are extremely unreactive and have limited synthetic applicability.
描述了2-
氨基-2-苄基-3(2H)-
苯并呋喃酮和相关化合物的简单方便的制备方法。该方法利用中间体2-
氨基-1-(2-羟基苯基)-3-苯基-2-
丙烯-1-酮的异常分子内共轭加成。 通过类似方法得到的2-苄基-2-三苯基正膦基
氨基-3(2H)-
苯并呋喃酮极不活泼并且合成适用性有限。