The reaction of cyanoacetic acid hydrazide with carbon disulfide in basic dimethylformamide afforded the potassium thiocarbamate 2 which underwent ready heterocyclization upon its reaction with α-haloketones to give the thiazole derivatives 4 and 23.
R. M. Mohareb, S. I. Aziz, N. I. Abdel-Sayed and A. H. El-Banna, J. Chem. Res. (S), 1999, 10 DOI: 10.1039/A802611D
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