Alkynylaziridines carrying an aryl group could be efficiently converted to spiro[isochroman-4,2'-pyrrolines] with gold salts as catalysts. This new rearrangement involved a Friedel-Crafts type intramolecular reaction followed by cyclization of the aminoallene intermediate, both initiated by the dual sigma and pi Lewis acidities of gold.
带有芳基的炔基
氮丙啶可以用
金盐作为
催化剂有效地转化为螺[isochroman-4,2'-pyrorolines]。这种新的重排涉及Friedel-Crafts型分子内反应,然后
氨化
金亚烷基
中间体的环化,这两者都是由
金的双重σ和π
路易斯酸引发的。