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Synthesis of substituted thieno(2,3-d)thiazoles and indolo(3,2-d)thiazoles

Journal Article · · Chem. Heterocycl. Compd. (Engl. Transl.); (United States)
DOI:https://doi.org/10.1007/BF00761998· OSTI ID:6893810
Alkylene-, halo-, and aryl-substituted 2-methylthieno(2,3-d)thiazoles were obtained by the action of phosphorus pentasulfide on the corresponding 2-acetylamino-3-bromo- or 2-acetylamino-3-hydroxythiophenes in an organic solvent with heating. 2-Oximes of halo- and methyl-substituted isatins were converted by reduction and acylation into 2-hydroxy-3-acetylaminoindoles, from which 2-methylindolo(3,2-d)-thiazoles were obtained by the action of phosphorus pentasulfide with heating in xylene. Results of electron impact ionization behavior, spin-spin coupling constant analysis, and mass and NMR structural determinations are given. A quantum-chemical atomic model is constructed for the thiazoles.
Research Organization:
Planning Institute of the Chemical Photographic Industry, Moscow (USSR)
OSTI ID:
6893810
Journal Information:
Chem. Heterocycl. Compd. (Engl. Transl.); (United States), Journal Name: Chem. Heterocycl. Compd. (Engl. Transl.); (United States) Vol. 23:3; ISSN CHCCA
Country of Publication:
United States
Language:
English