Events The 8th International Electronic Conference on Synthetic Organic Chemistry

Event submissions

Published

10.3390/ecsoc-8-01940

This submission belongs to the session a. General Organic Synthesis of the event The 8th International Electronic Conference on Synthetic Organic Chemistry

Published date

01 Nov, 2004

Citation

Lesya O. Kobryn, Jevgeniya Je Bila, Mykola I. Ganushchak, Volodymyr L. Mizyuk, Synthesis and Spectral Properties of Heterocycles as 2H-2-chromenone Derivatives, in Proceedings of The 8th International Electronic Conference on Synthetic Organic Chemistry, 1 November–30 November 2004, MDPI: Basel, Switzerland, doi: 10.3390/ecsoc-8-01940

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Synthesis and Spectral Properties of Heterocycles as 2H-2-chromenone Derivatives

Lesya O. Kobryn ¹

Jevgeniya Je Bila ¹

Mykola I. Ganushchak ¹

Volodymyr L. Mizyuk ¹

1. Department of Organic Chemistry, Ivan Franko National University of Lviv, Kyryla & Mefodiya 6, Lviv 79005, Ukraine

Abstract

3-Aryl-2H-2-chromenehydrazones react with isothiocyanates to form 3-aryl-2H-2-chromene thiosemicarbazones, which exist in tautomeric equilibrium in DMSO-d6 solution. 3-R’-2-(3-aryl-2?-2-chromenylideneazo)-4-thiazolidinones were obtained by cyclocondensation of 3-aryl-2H-2-chromene thiosemicarbazones with ester of bromoacetic acid in the presence of sodium acetate. 1-(2H-2-Oxochromen-6-yl)-4-phenyl thiosemicarbazide was obtained in the same manner from 2H-2-oxochromen-6-yl hydrazine. The interaction of C-4-nitrophenyl-N-3-nitrophenylnitron with 1-(2-oxo-2H-1-benzopyran-6-yl)-1H-pyrrole-2,5-dione leads to [3+2] cycloaddition products as mixture of stereoisomers.

Keywords

2H-2-chromene

cyclocondensation

heterocycles

thiosemicarbazones

thiazolidinones

ester of bromoacetic acid

stereoisomers

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