Patent · US Expired

Cyclopentyl-cyanomethyl-cyclopentenes, process for their preparation and their use as odoriferous substances

US5212153A · kind A · utility

3Cited by

5References

6Claims

0Family size

Assignee

Haarmann & Reimer Corporation · DE

Inventors

Rudolf Hopp · Holzminden, DE
Thomas Thielmann · Holzminden, DE
Wilhelm Gottsch · Holzminden, DE

Key dates

Filing date	Apr 2, 1992
Grant date	May 18, 1993
Priority date	—
Expiry date	Apr 2, 2012

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C2601/10
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

New nitriles which are odoriferous substances having an extremely fresh note are accessible by Knoevenagel condensation of 2-cyclopentyl-cyclopentanone and cyanoacetic acid and decarboxylation of the reaction product.

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