Yadav, J. S. ; Subba Reddy, B. V. ; Srinivas, M. ; Prabhakar, A. ; Jagadeesh, B. (2004) Montmorillonite KSF clay-promoted synthesis of enantiomerically pure 5-substituted pyrazoles from 2,3-dihydro-4H-pyran-4-ones Tetrahedron Letters, 45 (31). pp. 6033-6036. ISSN 0040-4039
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.tetlet.2004.06.031
Abstract
2,3-Dihydro-4H-pyran-4-ones derived from D-glucal undergo rapid condensation with aryl hydrazines in the presence of montmorillonite KSF clay under mild conditions to afford a novel class of chiral 5-substituted pyrazoles in good yields with high selectivity. The stereochemical assignments of the products were achieved by NMR studies.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Glycals; Dihydropyranones; Hydrazines; Pyrazoles |
| ID Code: | 58949 |
| Deposited On: | 02 Sep 2011 03:19 |
| Last Modified: | 02 Sep 2011 03:19 |
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