Council of Scientific and Industrial Research

Sandhya Saini

Anjan Ray

Suman Lata Jain

Praveen Kumar Khatri

Shafuir Rehman Khan

Vineet Aniya

Alka Kumari

Method for visible-light driven oxidation of aldehydes to carboxylic acid using carbon dioxide (CO) as the oxidant in the absence of any catalyst are provided. In the disclosed process, aldehydes, when reacted with COin an organic solvent, either in a batch reactor or in a continuous flow reactor, under conditions of ambient temperature and pressure, using a readily available household LED lamp, yield corresponding carboxylic acids along with the formation of carbon monoxide (CO) in the effluent gas.

Light assisted, catalyst-free oxidation of aldehydes to carboxylic acids using carbon dioxide

The present invention relates to a novel method for photocatalytic oxidation of allylic C—H bonds present in alkenes containing at least three carbon atoms. In this newly disclosed method, such alkenes, when reacted with carbon dioxide (CO) in an organic solvent containing a catalyst comprising of a supported molecular complex of transition metal ions under conditions of ambient temperature and pressure using a readily available household LED lamp, yield oxygenated products. The developed method represents a unique way to use COas an oxygen transfer agent to unsaturated organic compounds along with the formation of CO as a co-product using light as an energy source.

Process for the photocatalytic allylic oxidation of olefins using carbon dioxide

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Dehradun, India

Sandhya Saini