Patent · US Expired

Isomeric formyl trimethylbicyclo[2.2.2]oct-7-enes

US4992416A · kind A · utility

1Cited by

1References

17Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Klaus Bruns · Uerdingen, DE
Thomas Gerke · Goldkronach, DE
Michael J. Virnig · Tucson, US

Key dates

Filing date	May 5, 1989
Grant date	Feb 12, 1991
Priority date	—
Expiry date	May 5, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C47/445
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Isomeric formyl trimethylbicyclo[2.2.2]oct-7-enes, their use as perfumes, and a process for their preparation comprising a Diels-Alder reaction of acrolein with either 1,5,5-trimethylcyclohexa-1,3-diene, 3,5,5-trimethylcyclohexa-1,3-diene, 5,5-dimethyl-3-methylene-cyclohex-1-ene or mixtures thereof.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.