Patent · US Expired

Process for making tertiary alkylphosphines

US4757156A · kind A · utility

0Cited by

6References

9Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Norbert Weferling · Hürth, DE
Georg Elsner · Hürth, DE
Hans-Werner Stephan · Cologne, DE
Friedrich-Karl Frorath · Hürth, DE

Key dates

Filing date	Aug 14, 1987
Grant date	Jul 12, 1988
Priority date	—
Expiry date	Aug 14, 2007

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F9/5059
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Tertiary alkylphosphines of the general formula R.sub.3 P, in which R stands for identical or different, linear, unsubstituted alkyl groups having 3 to 20 carbon atoms, with the proviso however that one of the alkyl groups may be a secondary butyl group, are made by reacting hydrogen phosphide PH.sub.3 with an appropriate alkene or alkenes in stoichiometric excess, if desired, at elevated temperature and under increased pressure in contact with a radical-yielding agent. 2,2'-azobis-(2-methylbutyronitrile) is used as the radical-yielding agent in the absence of whatever alien solvent.

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