The chemistry of α,β-ditosyloxyketones: new and convenient route for the synthesis of 1,4,5-trisubstituted pyrazoles from α,β-chalcone ditosylates
作者:Om Prakash、Deepak Sharma、Raj Kamal、Rajesh Kumar、Reshmi R. Nair
DOI:10.1016/j.tet.2009.10.001
日期:2009.12
reagents such as phenylhydrazine hydrochloride, semicarbazide hydrochloride and thiosemicarbazide in suitable conditions leads to 1,2-aryl shift, thereby providing a novel route for the synthesis of 1,4,5-trisubstitutedpyrazoles.