US 5,212,153 A · Cyclopentyl-cyanomethyl-cyclopentenes, process for their preparation and their use as odoriferous substances

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.

Claims6

Dependent claims

1-Cyanomethyl-5-cyclopentyl-cyclopent-1-ene of the formula ##STR10##

Dependencies are inferred from the claim text.

Facts

Application

07/862,043Filed 2 Apr 1992

Priority

DE 411190212 Apr 1991

Granted

18 May 1993

Term ends

Not estimatedThe source records don’t support an estimate.

Classification6 codes

C07C 255/31
Having cyano groups bound to acyclic carbon atoms: having cyano groups bound to acyclic carbon atoms of a carbon skeleton containing rings other…
C11B 9/003
Compounds containing an alicyclic ring not condensed with another ring: the ring containing less than six carbon atoms
C07C 2601/08
With a five-membered ring: the ring being saturated
C07C 2601/10
With a five-membered ring: the ring being unsaturated

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

Life of this patent

Abstract

Claims6

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

Life of this patent

Abstract

Claims6