Solvent-free coumarin synthesis via pechmann reaction using solid catalysts
| Title | Solvent-free coumarin synthesis via pechmann reaction using solid catalysts |
| Publication Type | Journal Article |
| Year of Publication | 2012 |
| Authors | Kalita, P, Kumar, R |
| Journal | Microporous and Mesoporous Materials |
| Volume | 149 |
| Issue | 1 |
| Pagination | 1-9 |
| Date Published | FEB |
| ISSN | 1387-1811 |
| Keywords | Coumarin, Ethyl acetoacetate, Functionalization, Pechmann reaction, Resorcinol, Zr-TMS |
| Abstract | A solvent-free versatile and efficient methodology, reported here, allows the synthesis of coumarin by hydroxyalkylation of phenols with ethyl or methyl acetoacetate (via Pechmann reaction) using trifluoromethanesulfonic acid (trifle acid) functionalised Zr-TMS (Zr-TMS, zirconia based transition metal oxide mesoporous molecular sieves) catalysts with different loadings of triflic acid over Zr-TMS (5-25 wt.%) where the total acid strength of acid functionalised Zr-TMS material is increased as increasing loading of triflic acid from 5 to 25 wt.% leading to correspond increased higher catalytic activity. (C) 2011 Elsevier Inc. All rights reserved. |
| DOI | 10.1016/j.micromeso.2011.08.004 |
| Type of Journal (Indian or Foreign) | Foreign |
| Impact Factor (IF) | 3.365 |
Divison category:
Catalysis and Inorganic Chemistry