Synthesis of n-methyl-3-carboxy-2-chloro-dibenzo[c,f][1,4,5]oxa-thiazepine s,s-dioxide and its derivatives
作者:A. S. Bychenkov、A. V. Tarasov、P. K. Pisarev、V. Sh. Feldblum、Yu. A. Moskvichev
DOI:10.1007/s10593-010-0438-9
日期:2009.11
new dibenzo-condensed oxathiazepinecarboxylic acid was obtained starting from the methyl ester of 2,4-dichloro-5-chlorosulfonylbenzoic acid. Derivatives were obtained from N-phenylamide and N-methylamide of 2,4-dichloro-5-chlorosulfonylbenzoic acid. Methods for the preparation of the starting aromaticsulfonyl chlorides were proposed.
2-Halobenzenesulfonyl chlorides in the synthesis of pyrido[2,1-c][1,2,4]benzothiadiazine 5,5-dioxide derivatives
作者:R. M. Shlenev、S. I. Filimonov、A. V. Tarasov、A. S. Danilova、P. A. Agat’ev、S. A. Ivanovskii
DOI:10.1007/s11172-016-1518-5
日期:2016.7
A number of new functional derivatives of pyrido[2,1-c][1,2,4]benzothiadiazine 5,5-dioxide was obtained based on the reactions of 2-halobenzenesulfonyl chlorides with 2-aminopyridine derivatives. A quantitative criterion for the evaluation of a possibility for the reaction to proceed under noncatalytic conditions depending on the type of halogen and substituents in the starting compounds was suggested