Council of Scientific and Industrial Research

Veldurthy Bhaskar

Kondapuram Vijaya Raghavan

Boyapati Manoranjan Choudary

Mannepalli Lakshmi Kantam

Kottapalli Koteswara Rao

The present invention relates to a process for the preparation of esters from alcohols using acetic acid as acetylating agent and clays as catalysts, which comprises the preparation of esters in a single step from the reaction of aliphatic, acyclic, cyclic, heterocyclic, &agr;,&bgr;-unsaturated and aromatic alcohols with carbon atoms in the range of C to C with acetic acid in a molar ratio of 1:3 to 11 using reusable natural montmorillonite/metal ion-exchanged clay catalysts in the solvent medium of aliphatic, aromatic, or chlorinated hydrocarbons at 30-140&deg; C. for a period in the range of 0.02 to 3.0 hrs, and recovering the corresponding esters by simple work-up procedure.

Process for the production of esters from alcohols using acetic acid as acetylating and clays as catalysts

The present invention provides a novel single step process for the production of amides from amines comprising reaction of amines with an acylating agent comprising of a carboxylic acid in a molar ratio of 1:3 to 1:10 in the presence of reusable natural montmorillonite/metal ion-exchanged clay catalysts, in a suitable solvent medium at a temperature in the range of 30-160&deg; C. for a period of 0.02 to 6 hrs, and recovering the corresponding amides by a conventional simple work-up procedure.

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Andhra Pradesh, India

Veldurthy Bhaskar