The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 05, 2005
Filed:
May. 01, 2002
Applicants:
Felix Hugo Beijer, Sittard, NL;
Edwin Gerard Ljpeij, Sittard, NL;
Inventors:
Felix Hugo Beijer, Sittard, NL;
Edwin Gerard Ljpeij, Sittard, NL;
Assignee:
DSM IP Assets B.V., Heerlen, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07F009/50 ;
U.S. Cl.
CPC ...
Abstract
Multidentate phosphate compounds of formula (1) are prepared by reacting a 9-phosphabicyclononane, in the presence of an acid catalyst, with a 9-phospha-bicyclononane alkenylmonophosphine of formula (2), some of which, e.g., P-{2-(2-butenyl)}-9-phospha-bicyclononane, are novel compounds. The multidentate phosphine compounds of formula (1) and those of formula (3), are useful as ligands for transition metal catalysts in various types of reactions, such as, hydrogenation reactions.