Photocycloaddition of diethyl acetylenedicarboxylate to 2-phenyl-4H-1,3-benzothiazine derivatives

Marija Sindler-Kulyk, Alojz Dumbović, Dunja Srzić, Biserka Metelko, Lajosz Fodor

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Abstract

Upon irradiation in the presence of diethyl acetylenedicarboxylate 6,7-dimethoxy-2-phenyl-4H-1,3-benzothiazine gives two main products: benzonitrile (X) and 2,3-carbethoxy-4,5-dimethoxy-7-methylbenzothiophene (XI). We report herein the first photochemical reaction of a 4H-1,3-benzothiazine derivative.

Original languageEnglish
Pages (from-to)2749-2752
Number of pages4
JournalHeterocycles
Volume24
Issue number10
DOIs
Publication statusPublished - Oct 1 1986

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ASJC Scopus subject areas

  • Analytical Chemistry
  • Pharmacology
  • Organic Chemistry

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