US 6,982,345 B2 | ||
Process for preparation of cinnamates using polyaniline salts as catalysts | ||
Srinivasan Palaniappan, Andra Pradesh (India); and Malladi Sairam, Andra Pradesh (India) | ||
Assigned to Council of Scientific & Industrial Research, New Delhi (India) | ||
Filed on Feb. 13, 2002, as Appl. No. 10/75,933. | ||
Prior Publication US 2004/0049068 A1, Mar. 11, 2004 | ||
Int. Cl. C07C 69/74 (2006.01) |
U.S. Cl. 560—128 | 16 Claims |
1. A process for preparation of cinnamates using polyaniline salt as catalyst, which comprises esterifying cinnamic acid directly with an aliphatic mono hydric alcohol in the presence of polyaniline salt as catalyst at a temperature ranging from about 30 to about 80° C. for a period ranging from about 4 to about 24 hours removing the catalyst from the reaction mixture and separating the desired ester by filtration. |