The preparation of benzoisothiazolo[1,2-<i>b</i>][1,2]isoquinolin-11-one-1,1-dioxides from dilithiated<i>ortho</i>-toluic acids and lithiated methyl 2-(aminosulfonyl)benzoate
作者:S. Patrick Dunn、Matthew J. Walters、Clyde R. Metz、Charles F. Beam、William T. Pennington、Mariusz Krawiec
DOI:10.1002/jhet.5570410626
日期:2004.11
Select dilithiated ortho-toluic acids were prepared in excess lithium diisopropylamide and condensed with methyl 2-(aminosulfonyl)benzoate followed by a twofold cyclization of intermediates to afford benzoisothiazolo[1,2-b][1,2]isoquinolin-11-one-1,1-dioxides, a new fused-ring heterocyclic system.
在过量的二异丙基氨基化锂中制备精选的二甲硅烷基原甲酸,并与2-(氨基磺酰基)苯甲酸甲酯缩合,然后将中间体进行两次环化,得到苯并异噻唑并[1,2- b ] [1,2]异喹啉-11-- 1,1-二氧化物,一种新的稠环杂环系统。