Formal [3+3] Cyclocondensation of 4-Acyl-1H-pyrrole-2,3-diones with Five-Membered Cyclic Enamines To Form Substituted 1H-Pyrazolo[3,4-b]pyridines and Isoxazolo[5,4-b]pyridines
作者:Аndrey Maslivets、Alexey Dubovtsev、Maksim Dmitriev、Pavel Silaichev、Dmitriy Antonov
DOI:10.1055/s-0036-1588407
日期:——
substituted 1H-pyrazolo[3,4-b]pyridines and isoxazolo[5,4-b]pyridines was developed through the formal [3+3] cascade cyclocondensation of 4-acyl-1H-pyrrole-2,3-diones as 1,3-bis-electrophiles with the five-membered cyclic enamines as 1,3-bis-nucleophiles. A highly efficient method for the preparation of multifunctional substituted 1H-pyrazolo[3,4-b]pyridines and isoxazolo[5,4-b]pyridines was developed through
摘要 通过4-酰基-1的正式[3 + 3]级联环缩合反应,开发了一种高效的制备多功能取代的1 H-吡唑并[3,4- b ]吡啶和异恶唑并[5,4- b ]吡啶的方法。H-吡咯-2,3-二酮为1,3-双亲电子试剂,五元环烯胺为1,3-双亲核试剂。 通过4-酰基-1的正式[3 + 3]级联环缩合反应,开发了一种高效的制备多功能取代的1 H-吡唑并[3,4- b ]吡啶和异恶唑并[5,4- b ]吡啶的方法。H-吡咯-2,3-二酮为1,3-双亲电子试剂,五元环烯胺为1,3-双亲核试剂。