Author/Authors :
Singh، نويسنده , , Sunil K. and Srinivasa Reddy، نويسنده , , M. and Shivaramakrishna، نويسنده , , S. and Kavitha، نويسنده , , D. and Vasudev، نويسنده , , R. and Babu، نويسنده , , J. Moses and Sivalakshmidevi، نويسنده , , A. and Rao، نويسنده , , Y. Koteswar، نويسنده ,
Abstract :
The factors affecting regioselectivity during the formation of 1,5-diarylpyrazoles from aryl hydrazines and 1,3-diketones are identified and the regioisomers were characterized by 1D NOESY, LC–NMR and X-ray analyses. A simple alteration in the usual reaction conditions is reported, which allows the exclusive formation of 1,5-diarylpyrazoles.
Keywords :
regioselectivity , 1 , 5-Diarylpyrazoles , LC–NMR , 1D NOESY
