Council of Scientific and Industrial Research

Balagam Bharathi

Boyapati Manoranjan Choudary

Mannepalli Lakshmi Kantam

Kondapuram Vijaya Raghavan

Chinta Reddy Venkat Reddy

Chinta Venkat Reddy Reddy

Billakanti Veda Prakash

Aduri Ravindra

Chinta R V Reddy

The present invention relates to design and preparation of LDH-diisopropylamide through simple exchange process for the first time and its use in catalytic amounts for preparing aldols/&agr;,&bgr;-unsaturated nitriles/&agr;,&bgr;-unsaturated esters/transesterified products/&bgr;-nitroalkanols/Michael adducts and epoxide, resulting in higher yields.

Preparation of new layered double hydroxides exchanged with diisopropylamide for C-C bond forming reactions

The present invention provides a process for the preparation of amine oxide by reacting a tertiary or a secondary amine with hydrogen peroxide as an oxidant in the presence of a recyclable heterogeneous catalyst comprising a layered double hydroxide exchanged with an anion in the presence of an additive selected from the group consisting of benzonitrile, propionitrile, isobutyronitrile, benzamide and isobutyraride.

Process for the preparation of amine oxides

The present invention provides a process for the preparation of high quality amine oxide by reacting a tertiary or secondary amine with hydrogen peroxide as an oxidant in presence of a recyclable heterogeneous layered double hydroxide exchanged with one of the anions of transition metal oxides as a catalyst in a solvent selected from the group consisting of water, water containing dodecylbenzenesulfonic acid sodium salt as additive, and a water miscible organic solvent.

A process for the preparation of high quality amine oxides by reacting a tertiary or secondary amine with hydrogen peroxide as an oxidant in the presence of a recyclable heterogeneous layered double hydroxide exchanged with one of the anions of transition metal oxides as a catalyst in an organic solvent at a temperature ranging between 10-25&deg; C. for a period of 1-6 hours under continuous stirring and separating the product by simple filtration and subsequently evaporation of solvents by known methods.

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Andhra Pradesh, India

Balagam Bharathi