Patent · US Expired

Process for the production of 8.alpha., 12-oxido-13, 14,15,16-tetranorlabdane

US5811560A · kind A · utility

1Cited by

4References

7Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Georg Knuebel · Goldkronach, DE
Andreas Bomhard · Biberach, DE
Thomas Markert · Monheim, DE

Key dates

Filing date	May 5, 1997
Grant date	Sep 22, 1998
Priority date	—
Expiry date	May 5, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D307/92
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The invention pertains to a method for preparing 8-alpha,12-oxido-13,14,15,16, -tetranorlabdane by cyclizing a mixture of hydroxy-olefins (I)-(III. See the specification for their formulae. The cyclization is carried out in the presence of 10 to 100 wt. % acid, relative to the mixture of compounds (I) to (III).

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