Sodium carbonate-mediated facile synthesis of 4-substituted-2-(3,5-dimethylpyrazol-1-yl)thiazoles under solvent-free conditions
作者:Ranjana Aggarwal、Sunil Kumar、Shiv P. Singh
DOI:10.1080/17415993.2012.711331
日期:2012.10.1
An efficient and facile synthesis of 4-substituted-2-(3,5-dimethylpyrazol-1-yl)thiazoles 3 was achieved by grinding an equimolar mixture of alpha-haloketones 2 with 3,5-dimethylpyrazol-1-thiocarboxamide 1 in the presence of sodium carbonate under the solvent-free conditions. The present methodology offers an eco-friendly, mild, efficient (92-96%), and rapid method (5 min) for the synthesis of 3 besides preventing the formation of alpha-thiocyanatoketones as reported earlier in solvent-mediated conditions.[GRAPHICS].
SINGH, S. P.;SEHGAL, SUBHASH;SHARMA, PAWAN KUMAR, INDIAN J. CHEM., 29,(1990) N, C. 533-538
作者:SINGH, S. P.、SEHGAL, SUBHASH、SHARMA, PAWAN KUMAR