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Indian Journal of Chemistry -Section B (IJC-B) >
IJC-B Vol.44B [2005] >
IJC-B Vol.44B(11) [November 2005] >
| Title: | On the regiospecificity of 3,5-disubstituted pyrazoles derived from C-acylated- -enaminonitriles and esters |
| Authors: | Mukherjee, A
Mishra, M
Chatterjee, A
Sarkar, M
Chowdhury, S K Dutta
Mahalanabis, Kumar K |
| Keywords: | Regiospecificity
3,5-disubstituted pyrazoles
enaminonitriles
phenylhydrazine
aminocrotononitriles
enaminoesters
5-substituted pyrazoles |
| Issue Date: | Nov-2005 |
| Publisher: | CSIR |
| IPC Code: | Int.Cl.7 C 07 D |
| Abstract: | Regiospecificity of 3,5-disubstituted
pyrazoles derived from reaction of phenylhydrazine with  -acyl-β-aminocrotononitriles and esters is primarily deduced on the
basis of spectral analyses. The present work provides direct and unambiguous
evidences in support of the regiospecificity of these pyrazoles. In addition,
this work also shows that -acyl-β-enaminones
derived from enaminonitriles and enaminoesters both afford 5-substituted
pyrazoles in contrast to earlier observation by Benary. |
| Page(s): | 2333-2337 |
| ISSN: | 0975-0983(Online); 0376-4699(Print) |
| Source: | IJC-B Vol.44B(11) [November 2005]
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