Givaudan Corporation

Givaudan Roure (international) Sa

Givaudan-roure Corporation

Joseph A Virgilio

Emanuel Heilweil

Milton Manowitz

Isaac David Cohen

Joachim E Freudewald

Kenneth Leo Purzycki

Alan J Chalk

Harold A Brandman

Thomas F Wood

Theresa B Wertheimer

Alan John Chalk

Laszlo Wertheimer

Unsaturated aldehydes are prepared by mixing propargyl alcohol, a catalyst and a conjugated diolefin and heating the mixture for a time and at a temperature sufficient to form an unsaturated aldehyde. The diolefin may be 2-methylpentadiene, 2(5,5 dimethyl 5 hydroxy pentyl)1,3 butadiene or myrcene. The catalyst may be inorganic, organic, organometallic or mixtures thereof.

Preparation of unsaturated aldehydes from propargyl alcohol and

The use of novel compositions for preserving aqueous systems normally subject to spoilage is disclosed. The compositions incorporate an antimicrobial agent into an inert and biodegradable carrier. The resulting compositions are stable, active, non-toxic, non-corrosive, biodegradable, compatible with ecosystems while having a flash point above 200.degree. F. and a pleasant odor.

Preservative compositions for use in aqueous systems

Novel substituted heterocyclic formamidines are useful as ultraviolet light absorbers, the formamidines having the formula ##STR1## wherein: Ar represents a 2-thiazolyl, 2-pyridyl, 2- 4,6-dimethyl) pyrmidyl or a 4-(2-methyl)quinolyl group, and, R represents a phenyl group or an alkyl group of from one to eight carbon atoms.

Heterocyclic formamidines useful as ultraviolet light absorbers

A 'one-pot' process for the palladium catalyzed coupling of a diazonium salt with an olefinic bond, in the aqueous medium in which the diazonium salt is made, by employing a carboxylic acid as a solvent. Arylacrylic acids and their esters, e.g. the cinnamates, can be produced at low catalyst concentration without first isolating the diazonium salt. The process is applied to the synthesis of 2-ethylhexyl p-methoxycinnamate.

Process for the palladium catalyzed coupling of a diazonium salt with an

Novel substituted heterocyclic formamidines are useful as ultraviolet light absorbers, the formamidines having the formula ##STR1## wherein: Ar represents a 2-thiazolyl, 2-pyridyl, 2-(4,6-dimethyl) pyrimidyl or a 4-(2-methyl)quinolyl group, and,

Substituted benzamidines and their hydrochloride salts are useful as ultraviolet light absorbers, the benzamidines having the formula ##STR1## wherein: A.sup.1 and A.sup.2 may be the same or different and represent --COOR.sup.1, --CONR.sup.1 R.sup.2, --C.tbd.N or --C.sub.6 H.sub.5 ;

N,N'-diarylbenzamidines useful as ultraviolet light absorbers

The use of a novel system for preserving aqueous systems normally subject to spoilage is disclosed. The system comprises the incorporation of .beta.-bromo-.beta.-nitrostyrene onto a solid maltodextrin or corn syrup solid of low to intermediate dextrose equivalency.

Preservatives containing .beta.-bromo-.beta.-nitrostyrene for use in

This disclosure relates to a novel class of 2-alkyl-3-haloisothiazolium salts. These salts have been found to be useful in controlling the growth of bacteria and fungi. They have also been found to be useful intermediates in the preparation of novel and known antibacterial and antifungal compounds.

2-alkyl-3-haloisothiazol-3-thione

Fragrance compositions prepared by adding thereto an olfactorily effective amount of substantially pure 2,4,6-tribromo-3-methylanisole are disclosed.

Fragrance compositions containing 2,4,6-tribromo-3-methylanisole

A novel process for the preparation of 2,4,5-trichlorophenol which comprises selectively chlorinating 2,5-dichlorophenol under acidic conditions.

Process for the preparation of 2,4,5-trichlorophenol under acidic

2-Alkyl-3-haloisothiazolium salts and their derivatives

There is provided novel ketones of the structure: ##STR1## wherein: R.sub.1, R.sub.2, R.sub.3 and R.sub.4 represent hydrogen or methyl provided that:

3-Methyl-1-(2,3,4-and 2,4,4-trimethyl-1-cyclopentylidene)

3-Dicyanomethylene-4-isothiazolines

This disclosure relates to a novel class of 3-alkoxy-2-alkylisothiazolium salts. These salts have been found to be useful in controlling the growth of bacteria and fungi. They have also been found to be useful intermediates in the preparation of known antibacterial and antifungal compounds.

Growing community of inventors

Wayne, NJ, United States of America

Joseph A Virgilio