Hoffmann-La Roche Inc.

Ulrich Schwieter

Albert Pfiffner

Milos Suchy

Madhukar Subraya Chodnekar

Norbert Rigassi

Peter Loeliger

Rene Zurfluh

Werner Bollag

Rudolf Ruegg

Kurt Bernhard

Silvia Dorn

Paul Kreienbuhl

Rene Zurflun

Stephan Jaggli

A process for producing carotenoids and carotenoid intermediates via reduction of sulfonyl polyenes with a dithionite in the presence of ammonia or an aliphatic amine, including novel intermediates in this process, which carotenoids are known coloring agents for foodstuffs, animal feeds, pharmaceuticals, etc.

Sulfone polyene intermediates

Insecticidal compositions, and methods for their use, which comprise a combination of O,O-diethyl-O-(2-isopropyl-4-methylpyrimid-6-yl)-thionophosphoric acid ester with a pyrethroid which synergizes the insecticidal activity of the thionophosphoric acid ester.

Insecticidal compositions

Phenylcarbamates of the general formula: ##STR1## wherein R.sub.1 is lower alkyl, lower alkenyl, lower alkynyl, lower alkylcarbonyl, halogen-lower alkylcarbonyl or trichloromethylsulfenyl and R.sub.2 is hydrogen or lower alkyl, processes for their preparation; pesticidal compositions containing one or more of the phenylcarbamates as the active ingredient and methods for using the pesticide composition are disclosed.

Phenylcarbamates

Alkynyl, benzyl or phenyl, ethers and esters which are ring substituted with an oxy or a thio aliphatic chain. These ethers and esters are usful in killing and preventing the proliferation of insects by upsetting their hormonal balance.

Alkynyloxy-phenyl derivatives

Ethers, esters and amides of dodeca-2,4-dien 1-ols or 1-oic acids which have a methyl or ethyl side chain at the 11-position which are useful in killing and preventing proliferation of insects, by upsetting their hormone balance and a process for preparing these ethers, esters and amides including intermediates in this process.

Epoxy dodecadienamides

Alkynyl, benzyl or phenyl, ethers and esters which are ring substituted with an oxy or a thio aliphatic chain. These ethers and esters are useful in killing and preventing the proliferation of insects by upsetting their hormonal balance.

9-[2-(1-alkoxy-ethyl)-5,5-dimethyl-cyclopent-1-en-1-yl]-3,7-dimethyl-nona-2 ,4,6,8-tetraen acid compounds are disclosed which are useful for the topical or systemic treatment of dermatological disorders.

9[2-(1-Al

Compounds represented by the formula ##STR1## wherein R.sub.1 is hydrogen or lower alkyl containing 1-4 carbons and

Pesticides

Alkyl ethers of 2,3-dihydrobenzofuran where the alkyl chain may contain branched chains, unsaturated bonds, epoxy bridges, and may be substituted with halo, alkoxy, lower alkenyloxy, or lower alkynyloxy substituents useful in killing and preventing the proliferation of insects and other pests by upsetting their hormone balance.

Novel benzofuranyl pest retardants

Phenyloxy, phenylsulfinyl, phenylthio, phenylsulfonyl, benzyloxy, benzylthio, benzylsulfinyl, or benzylsulfonyl, alkyl or alkenyl derivatives wherein the alkyl or alkenyl group contains at least 7 carbon atoms which are useful in killing and preventing proliferation of insects by upsetting their hormone balance.

Phenyl derivatives

Mono acetals of unsaturated aliphatic dialdehydes having from 7 to 10 carbon atoms which are intermediates in the preparation of carotenoids.

Monoacetals of unsaturated aliphatic dialdehydes

The present invention relates to polyene compounds, a process for their preparation, pesticidal compositions containing same, and a method of providing a locus free from pests using said pesticides, alone or in composition.

2,4-Dodecadienoic acid esters and use for insecticides

Epithio unsaturated aliphatic acids, nitriles, and alcohols and ether, ester and amide derivatives thereof and epoxy unsaturated aliphatic acids, nitriles and alcohols and ether ester and amide derivatives thereof, which are useful in killing and preventing proliferation of insects by upsetting their hormone balance.

Epithio compounds

Polyene esters, ethers, carbamates, thioesters, amides, carbonyls and nitriles, containing at least one pair of conjugated double bonds, which are useful in killing pests, such as insects, and preventing the proliferation of such pests by upsetting their hormonal balance.

Growing community of inventors

Reinach, Switzerland

Ulrich Schwieter