Hoffmann-La Roche Inc.

Givaudan Corporation

Dow Corning Corporation

Georg Frater

Milos Suchy

Jean Wenger

Paul Winternitz

Stephen E Cray

Andre R Colas

Daniel Helmlinger

Harald Schmidt

Albert Pfiffner

Rene Zurfluh

Jost Wild

Trudi Sigg-Grutter

Hans Schmid

Urs Muller

Hans Greuter

Novel mixtures of bicyclic ethers of the formulas ##STR1## wherein R represents an alkyl group of from one to four carbon atoms, said mixture having at least a 1.1:1 ratio of Ia to Ib, a process for their manufacture and their use as odoranis and novel intermediates for their preparation are described.

Mixtures of bicyclic ethers, fragrance compositions containing same and

A compound of the formula ##STR1## wherein the dotted line signifies an optional bond, as racemates or individual enantiomers, odorant compositions containing the same, and a process for the manufacture of the compounds of formula I which comprises rearranging sclareolide, episclareolide or isosclareolide at an elevated temperature in acidic medium with dehydration and, if desired, reducing the carbon-carbon double bond present in the reaction product.

Tricyclic ketones and fragrance compositions containing same

A process for the manufacture of .alpha.- and .beta.-irone, namely the compounds of formula I, as well as novel intermediates in the process is provided. ##STR1##

Process for the manufacture of a mixture of .alpha.- and .beta.-irone

Organosilicon compounds having at least one unit of the general formula ##STR1## in which R represents alkyl, R' is a divalent alkylene, oxyalkylene, alkenylene or oxyalkenylene, Z represents an alkyl, alkoxy or hydroxyl group, a has a value of 0, 1, 2, or 3 and c is 0 or 1, wherein at least one of Z and R' is linked to the multivalent aryl group via an ether linkage, are useful for absorbing UV radiation. Especially if polymeric (with e.g. diorganosiloxane units) they can be incorporated in sunscreen preparations to improve their substantivity to the skin. A process for preparing the compounds is also disclosed.

Organosilicon compounds their preparation and use

Novel mixtures of bicylic ethers of the formulas ##STR1## wherein R represents an alkyl group of from one to four carbon atoms, said mixture having at least a 1.1:1 ratio of 1a to 1b, a process for their manufacture and their use as odorants are described.

Mixtures of bicyclic ethers and fragrance compositions containing same

Organosilicon compounds having at least one unit of the general formula ##STR1## in which R represents alkyl, R' is a divalent alkylene, oxyalkylene, alkenylene or oxyalkenylene, Z represents an alkyl, alkoxy or hydroxyl group, a has a value of 0, 1, 2 or 3 and c is 0 or 1, wherein at least one of Z and R' is linked to the multivalent aryl group via an ether linkage, are useful for absorbing UV radiation. Especially if polymeric (with e.g. diorganosiloxane units) they can be incorporated in sunscreen preparations to improve their substantivity to the skin. A process for preparing the compounds is also disclosed.

Novel compounds of the formula ##STR1## wherein: the symbols R.sup.1, R.sup.2, R.sup.4, R.sup.5 and R.sup.6 represent hydrogen or methyl, with the proviso that only one of R.sup.1, R.sup.2 and R.sup.4 represents methyl, and, when either or both R.sup.5 and R.sup.6 represent methyl, then R.sup.1, R.sup.2 and R.sup.4 represent hydrogen; and,

Novel tricyclic ketones and fragrance compositions containing same

Organosilicon compounds having at least one unit of the general formula ##STR1## in which R represents alkyl, R' is a divalent alkylene, oxyalkylene, alkenylene or oxyalkenylene, Z represents an alkyl, alkoxy or hydroxyl group, a has a value of 0, 1, 2 or 3 and c is 0 to 1, wherein at least one of Z and R' is linked to the multivalent aryl group via an ether linkage, are useful for absorbing UV radiation. Especially if polymeric (with e.g. diorganosiloxane units) they can be incorporated in sunscreen preparations to improve their substantivity to the skin. A process for preparing the compounds is also disclosed.

Organosilicon compounds

The oxime ester compound [(isopropylideneamino)oxy]-ethyl-2-[[(6-chloroquinoxalinyl)oxy]phenoxy]pro pionate, processes for the preparation thereof, herbicidal compositions containing said compound and methods of use of the composition.

[(Isopropylideneamino)oxy]-eth

Benzoic acid compounds of the formula ##STR1## wherein A, R.sup.1, R.sup.2, R.sup.4, R.sup.5, R.sup.6, R.sup.7, n and X are as defined hereinafter, processes for their preparation, herbicidal compositions containing these compounds and methods for the use of the compounds and the herbicidal compositions are disclosed. Novel compounds which useful as starting materials for the preparation of the benzoic acid compounds of formula I are also disclosed.

Certain aryloxy-benzoyl sulfoximines having herbicidal activity

Oxime ester compounds of the formula ##STR1## wherein A is one of the groups ##STR2## wherein B is --CH.dbd. or nitrogen and R.sub.1 is one of the groups ##STR3## wherein R.sub.2 -R.sub.7, m and n are as hereinafter set forth, processes for their preparation, herbicidal compositions containing these compounds as the active ingredient and methods of use of the herbicidal compositions are disclosed.

Oxime ester herbicides

Propionic acid amides of the formula ##STR1## wherein R, R.sub.1 and R.sub.2 are as defined hereinafter, processes for their preparation, herbicidal compositions containing these amides and methods of use of the herbicidal compositions are disclosed.

Phenoxy phenoxy propionic hydrazides

Quinyloxy-phenyloxy-oxime ester compounds having herbicidal activity

Propionic acid esters of the general formula ##STR1## wherein R.sub.1 is hydrogen, alkyl of from 1 to 6 carbon atoms or phenyl, R.sub.2 is alkyl of from 1 to 6 carbon atoms, alkenyl of from 2 to 6 carbon atoms, alkynyl of from 2 to 6 carbon atoms or phenyl, or R.sub.1 and R.sub.2 together with the carbon atom to which they are attached form a cycloalkane ring containing 4 to 10 carbon atoms which can be mono-, di- or trisubstituted with alkyl of from 1 to 3 carbon atoms, R.sub.3 represents a halogen, trifluoromethyl or nitro, and R.sub.4 and R.sub.5 each represent a hydrogen or halogen atom, processes for their manufacture, herbicidal compositions containing these compounds as the active ingredient and methods of use of the herbicidal compositions are disclosed.

Propionic acid esters and herbicidal use thereof

There is disclosed herein a novel compound, 6,7-epoxy-1-(p-ethylphenoxy)-3,4,7-trimethyl-nonane, which synergizes the insect regulation activity of 6,7-epoxy-1-(p-ethylphenoxy)-3-ethyl-7-methyl-nonane.

Growing community of inventors

Greifensee, Switzerland

Georg Frater