Condensation products of 2‐bromo‐3‐substituted‐inden‐1‐ones with several primary amines
- 1 October 1992
- journal article
- research article
- Published by Wiley in Journal of Heterocyclic Chemistry
- Vol. 29 (6) , 1525-1528
- https://doi.org/10.1002/jhet.5570290625
Abstract
2‐Bromo‐3‐substituted‐inden‐1‐ones 2 reacted with L‐cysteine or 2‐aminobenzenethiol to produce 2,3‐dihydro‐5‐phenylindeno[2,1‐b][1,4]thiazine in moderate yield or 6‐substituted‐indeno[2,1‐b][1,4]benzothiazines in good yield. The debrominated oxime and the phenylhydrazone of 2 were separated into their respective E‐ and Z‐conformers by column chromatography and their E‐ and Z‐configurations were obtained from the 1H nmr spectra.Keywords
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