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B G Advani
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Volume 91 Issue 5 October 1982 pp 445-450 Organic
A general synthesis of thiazoles. Part 5. Synthesis of 5-acyl-2-dialkylaminothiazoles
S Rajappa V Sudarsanam B G Advani A V Rane
Amidinothioureas (
7 ), (11 ) and (12 ) obtained by condensation of N,N-disubstituted thioureas with amide acetals have been used as starting materials for the synthesis of thiazoles. Thus, reaction with chloracetone and phenacyl bromides leads to ketones; the use of chloracetic ester in this reaction yields the thiazole-5-carboxylic ester (10 ). -
Volume 91 Issue 6 December 1982 pp 463-466 Organic
Nitroenamines. Part 9. The enaminic reactivity of 2-nitromethylenethiazolidine
2-Nitromethylenethiazolidine has been synthesised and found to be a weak enamine. It reacts with acyl isothiocyanates but not with phenyl isothiocyanate. Oxidative cyclization of the acyl isothiocyanate adducts leads to isothiazolo [3,2-b] thiazole derivatives. The 2-benzoylimino compound
8 undergoes base catalysed fragmentation to give the nitronitrile9 .
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Journal of Chemical Sciences
Volume 135, 2023
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