Heterocyclization of N-(chlorosulfonyl)imidoyl chlorides with anilines, a new method of synthesis of 1,2,4-benzothiadiazine 1,1-dioxides
作者:Alexander A. Shalimov、Tetyana I. Chudakova、Yurii G. Vlasenko、Anatoly D. Sinitsa、Petro P. Onys’ko
DOI:10.1007/s10593-016-1873-z
日期:2016.4
N-(Chlorosulfonyl)imidoyl chlorides react regioselectively with anilines, 2-aminomethylnaphthaline, or 1,2,3,4-tetrahydroquinoline leading to derivatives of 1,2,4-benzothiadiazine 1,1-dioxide. Heterocyclization occurs at the sterically less hindered C-6 atom in the case of 3-methoxy- and 3,4-dimethoxyaniline, while the reaction with 3-methylaniline leads to a mixture of cyclization products at the
N-(氯磺酰基)亚氨基氯与苯胺,2-氨基甲基萘或1,2,3,4-四氢喹啉在区域上选择性反应,生成1,2,4-苯并噻二嗪1,1-二氧化物的衍生物。在3-甲氧基-和3,4-二甲氧基苯胺的情况下,杂环在较少受阻的C-6原子处发生,而与3-甲基苯胺的反应导致在C-2和C-6原子处环化产物的混合物苯胺