A Facile One-Pot Expeditious Synthesis of Thiazolyl-pyrazolones
作者:Chunduru S. R. Venkata、Vedula Rajeswar Rao
DOI:10.1080/10426507.2010.505593
日期:2011.2.28
Abstract A novel, one-pot, multicomponent synthesis of 4-arylidene-3-methyl-1-(4-arylthiazol-2-yl)-1H-pyrazol-5(4H)-ones is described using phenacyl bromides, thiosemicarbazide, ethylacetoacetate, and aryl aldehydes. This synthesis involves simultaneous formation of two heterocycles like thiazole and pyrazolone along with condensation of active methylene group by aldehydes via Knoevenagel reaction