Givaudan Corporation

Givaudan S.a.

Givaudan Roure (international) Sa

Givaudan-roure Corporation

Mario Pesaro

Daniel Helmlinger

Jean-Pierre Bachmann

Heiner Kuntzel

Paul Dubs

Franz Etzweiler

Harald Schmidt

Cornelius Nussbaumer

Michael J Klaus

Felix Flachsmann

The use of 2-phenyl-2-alkene nitriles as fragrance ingredients and fragrance applications comprising them. These fragrance applications can be e.g. perfumes, household products, laundry products, body care products and cosmetics.

Organic compounds

Nitrile

The invention concerns novel odorants of formula I wherein R is hydrogen or methyl. ##STR1## The invention also concerns fragrance compositions containing I. Formula I is intended to particularly embrace as the racemates, (.+-.)-3.alpha.-acetyl-3.beta.,4.beta.,5,5-tetramethyl-2,3,4,4a.beta.,5,6, 7,8-octahydronapthalene and (.+-.)-3.alpha.-acetyl-4.beta.,5,5,-trimethyl-2,3.beta.,4,4a.beta.,5,6,7,8 -octahydronapthalene.

Acetyl-tri-and-tetramethyl-octahydronaphthalenes and fragrance

The invention concerns novel odorants of formula I wherein R is hydrogen or methyl. ##STR1## The invention also concerns fragrance compositions containing I. Formula I is intended to particularly embrace as the racemates, (.+-.)-3.alpha.-acetyl-3.beta.,4.beta.,5,5-tetramethyl-2,3,4,4a.beta.,5,6, 7,8-octahydronapthalene and (.+-.)-3.alpha.-acetyl-4.beta.,5,5-trimethyl-2,3.beta.,4,4a.beta.,5,6,7,8- octahydronapthalene.

The present invention concerns the novel odorant 1,1,2,3,3,6-hexamethyl-4,5,6,7-tetrahydro-5-indanone, I, a process for the manufacture of I, novel intermediates used in the process and fragrance compositions containing I. ##STR1## The process for the manufacture of 1,1,2,3,3,6-hexamethyl-4,5,6,7-tetrahydro-5-indanone comprises hydroborating 1,1,2,3,3,6-hexamethyl-4,7-dihydroindane and oxidizing the hydroboration product to 1,1,2,3,3,6-hexamethyl-4,5,6,7-tetrahydro-5-indanone, or reductively alkylating, especially methylating, 5-nitro-1,1,2,3,3,6-hexamethylindane and converting the resulting 5-dialkyl-amino-1,1,2,3,3,6-hexamethylindane into 1,1,2,3,3,6-hexamethyl-4,5,6,7-tetrahydro-5-indanone by reduction of the benzene ring and hydrolysis of the resulting enamine.

1,1,2,3,3,6-hexamethyl-4,5,6,7-tetrahydro-5-indanone and fragrance

The invention concerns the novel compound 3,5,5,6,8,8,-hexamethyl-1,2,3,4,5,6,7,8-octahydro-2-naphthalenone, a process for its manufacture, and fragrance and flavor compositions containing same.

3,5,5,6,8,8,-hexamethyl-1,2,3,4,5,6,7,8,-octahydro-2-naphthalenone

Flavor compositions and tobacco products containing 3,5,5,6,8,8-hexamethyl-1,2,3,4,5,6,7,8-octahydro-2-naphthalenone and methods for making same are disclosed.

Flavor compositions and tobacco products containing

The invention is concerned with novel bicyclic epoxides, a process for their manufacture and novel fragrance and flavor compositions containing the same.

Novel bicyclic epoxides and compositions

This invention is concerned with novel substituted bicyclo[4.3.0]non-1(6)-en-8-yl methyl ketones, a process for their manufacture and novel fragrance and flavor compositions containing same.

Substituted bicyclo[4.3.0]non-1(6)-en-8-yl methyl ketones and fragrance

Novel thiazolidines, a process for their manufacture, and odorant and/or flavorant compositions containing the novel compounds are disclosed.

Growing community of inventors

Zurich, Switzerland

Mario Pesaro