2-alkynylanilines is described. This method achieves the formation of two new C–N bonds through a reaction sequence of diazotization with t-BuONO, nucleophilic addition of the alkyne to the BF3-coordinated diazonium ion, followed by nitrile addition to the intermediary vinyl cation and hydrolysis. The method provides efficient and general access to a variety of 4-amido-cinnolines. Notable features of the method
描述了BF 3-
醚酸酯促进的腈与2-炔基
苯胺的级联反应。该方法通过与t -BuONO进行重氮化,将
炔烃亲核加到BF 3配位的重氮离子上,然后腈加成到中间
乙烯基阳离子中并
水解,从而实现了两个新的C–N键的形成。该方法提供了对各种4-
氨基-
丁二酸的有效且通用的途径。该方法的显着特征包括宽泛的官能团耐受性和避免使用过渡
金属。