Givaudan Corporation

Hoffmann-la Roche Inc.

Harold A Brandman

Milton Manowitz

David L Coffen

Joachim E Freudewald

Edward J Nikawitz

Frederick H Sharpell, Jr

Joseph A Virgilio

Emanuel Heilweil

Thomas F Wood

William E Newman

Roy H Valentine

This invention discloses a novel process for producing dihydrocinnamaldehyde derivatives which comprises reacting a benzene derivative with an alken-2-ylidene diacylate or an .alpha.-ethylenic aldehyde in trifluoroacetic acid (TFA).

Process for the preparation of dihydrocinnamaldehyde derivatives

There is disclosed methods and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems wherein the growth is inhibited or prevented by the presence of an effective amount of a 2-chloro-3-oxobutyramide derivative.

Preservation of aqueous systems with 2-chloro-3-oxobutyramide derivatives

Novel iodopropargyl pyridyl and picolinyl ethers and thioethers are effective antifungal agents. They find special utility in paint for protecting finished paint films from fungal attack.

Iodopropargyl pyridyl and picolinyl ethers and thioethers as paint

Methods and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems wherein the growth is inhibited or prevented by the presence of an effective amount of .alpha.-chloro-.beta.-aminocrotonamide.

Preservation of aqueous systems with

Methods and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems wherein the growth is inhibited or prevented by the presence of an effective amount of .alpha.-bromo-.beta.-aminocrotononitrile.

Methods and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems wherein the growth is inhibited or prevented by the presence of an effective amount of an .alpha.-halo-.beta.-aminocrotonic acid ester.

Preservation of aqueous systems with .alpha.-halo-.beta.-aminocrotonic

A novel process for producing a substituted .alpha.-alkyldihydrocinnamaldehydes from the corresponding alkylphenone via a novel .alpha.-alkyl-.beta.-chlorocinnamaldehyde.

Process for the preparation of substituted dihydrocinnamaldehydes via

The present invention relates to processes and compositions for inhibiting or preventing the growth of microorganisms in aqueous systems and formulations, by the addition thereto of dialkyl bromonitromalonates.

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Glen Ridge, NJ, United States of America

Harold A Brandman