AbstractWe have introduced a strategy for the construction of spirocycloalkane 1λ6-isothiazolidine-1,1,4-triones through the mesylation of 1-aminocyclopentane-, 1-aminocyclohexane-, and 1-aminocycloheptanecarboxylic acid esters with methanesulfonylchloride followed by alkylation with methyl iodide and consequent cyclization in the presence of potassium tert-butoxide in N,N-dimethylformamide. The spirocycloalkane
摘要我们引入了策略spirocycloalkane的1λ建设6 -isothiazolidine-1,1,4-三酮通过1-
氨基
环戊烷,1- aminocyclohexane-和1- aminocycloheptanecarboxylic酸酯甲磺酰化与甲
磺酰氯,接着用甲基
碘烷基化然后在
叔丁醇钾存在下,在N,N-二甲基甲酰胺中环化。所述spirocycloalkane 4-
氨基-2,3-二氢-1- ħ -1λ 6 -
异噻唑烷-1,1-二酮通过甲磺酰化制备Ñ甲基化的1- aminocyclopentyl-,1- aminocyclohexyl-和1- aminocycloheptyl腈,接着处理得到ñ - (1- cyanocycloalkyl) -N-甲基甲磺酰胺与
叔丁醇钾的N,N-二甲基甲酰胺。螺4-
氨基-2,3-二氢-1- ħ -1λ 6 -
异噻唑烷-1,1-二酮转化为目标螺1λ 6 -isothiazolidine-1