An efficient approach to pyrazolo[5,1-a]isoquinolin-2-amines via a silver(i)-catalyzed three-component reaction of 2-alkynylbenzaldehyde, sulfonohydrazide, and nitrile
A three-component reaction of 2-alkynylbenzaldehyde, sulfonohydrazide, and nitrile catalyzed by silver triflate under mild conditions is reported, which generates pyrazolo[5,1-a]isoquinolin-2-amines in good to excellent yields.
二炔基苯甲醛,磺酰肼与腈的三组分反应 三氟甲磺酸银据报道,在温和的条件下,生成吡唑并[5,1- a ]异喹啉-2-胺的产率好至极好。