… ON 2-MERCAPTO COUMARINOXAZOLE SYSTEMS: SYNTHESIS OF NOVEL TYPES OF 2-MERCAPTO-9-METHYL-7H-PYRANO-(3, 2-e) BENZOXAZOLE-7-ONE …

E Surender, AV Reddy, GVPC Mouli…

Index: Surender, E.; Reddy, Venkat A.; Mouli. Chandra G. V. P.; Reddy, Y. D. Phosphorus and Sulfur and the Related Elements, 1983 , vol. 16, p. 247 - 250

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Abstract

Abstract 5-Amino-6-hydroxy-4-methylcoumarin (I) when treated with carbon disulphide in alkaline medium to furnish the novel and hitherto unknown 2-mercapto-9-methyl-7H-pyrano (3, 2-e) benzoxazole-7-one (IIa). Treatment of IIa with alkyl halides and acid halides gives the corresponding thioethers (IIb-i) and thioesters (IIj-k) respectively. Oxidation of IIb, IIc, IId, IIf, IIh with hydrogenperoxide gives the corresponding sulfones (IIIa-e). These are ...