36776-27-9Relevant articles and documents
Mitsunobu C-alkylation of β-alkoxycarbonyl 2-nitrobenzenesulfones and its use for the rapid synthesis of novel benzothiazine derivatives
Drábiková, Martina,Kraj?ovi?ová, Soňa,Soural, Miroslav
, p. 6296 - 6306 (2017/10/06)
Herein, we report the first examples of the Mitsunobu alkylation of β-alkoxycarbonyl 2-nitrobenzenesulfones. Wang resin was acylated with α-halocarboxylic acids followed by the reaction with 2-nitrothiophenols. After oxidation with m-chloroperbenzoic acid, the immobilized β-alkoxycarbonyl 2-nitrobenzensulfones were subjected to alkylation with various alcohols. The reaction outcome strongly depended on the selection of the alkylating species. After the reduction of the nitro group, acid-mediated cleavage and subsequent cyclization, the C2-(di)substituted benzothiazin-3(4H)-one 1,1-dioxides were obtained in high crude purities and good overall yields.
S-Aryl(tetramethyl)isothiouronium salts as potential antimicrobial agents, II
Tait,Parenti,Di Bella,Bondi,Quaglio
, p. 203 - 210 (2007/10/02)
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