A silver(i)-catalyzed three-component reaction of 2-alkylenecyclobutanone, N′-(2-alkynylbenzylidene)hydrazide with water gives rise to 3-(pyrazolo[5,1-a]isoquinolin-1-yl)propanoic acids in good yields through 6-endo cyclization, [3 + 2] cycloaddition, and rearrangement.
一种
银(i)催化的2-烯基
环丁酮,N'-(2-炔基苄亚甲基)腙与
水的三组分反应,通过6-内环化,[3 + 2]环加成和重排反应,产生了3-(
吡唑并[5,1-a]
异喹啉-1-基)
丙酸,收率较高。