Reactions of 1,3-benzothiazines and 1,4-benzothiazepines with dimethyl acetylenedicarboxylate

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Abstract

Substituted 2H-1,3-benzothiazines and 2,3-dihydro-1,4-benzothiazepines react with dimethyl acetylenedicarboxylate in aqueous methanol to give new, unexpected condensed-skeleton heterocycles. The structures of the new compounds were determined by 1H and 13C nuclear magnetic resonance (NMR), two-dimensional (2D) heteronuclear multiple-bond correlation (HMBC), infrared (IR), and for one derivative also by X-ray analysis.

Original languageEnglish
Pages (from-to)431-436
Number of pages6
JournalMonatshefte fur Chemie
Volume141
Issue number4
DOIs
Publication statusPublished - ápr. 1 2010

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ASJC Scopus subject areas

  • Chemistry(all)

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