Facile Synthesis of 1-(Isoquinolin-1-yl)ureas by Silver Triflate Catalyzed Tandem Reactions of 2-Alkynylbenzaldoximes with Carbodiimides
作者:Shengqing Ye、Huanhuan Wang、Jie Wu
DOI:10.1002/ejoc.201001040
日期:2010.11
2-Alkynylbenzaldoximes react with carbodiimides under mild conditions and silver triflate catalysis in DMF, leading to a diverse range of 1-(isoquinolin-1-yl)ureas in good to excellent yields. This transformation involves tandem 6-endo cyclization, [3+2] cycloaddition, and subsequent rearrangement.
2-炔基苯甲醛肟在温和条件下与碳二亚胺反应,并在 DMF 中三氟甲磺酸银催化下,产生多种 1-(异喹啉-1-基)脲,产率从良好到极好。这种转化涉及串联 6-内环化、[3+2] 环加成和随后的重排。