Title:
PROCESS FOR THE CARBONYLATION OF PENTENENITRILE
Document Type and Number:
WIPO Patent Application WO2001072697
Kind Code:
A3
Abstract:
Process to prepare a 5-cyanovaleric acid or its ester by carbonylation of a pentenenitrile, wherein pentenenitrile is reacted with carbon monoxide and water or an alcohol in the presence of a catalyst system. The catalyst system comprises: (a) a metal of Group VIII or a compound thereof and (b) a bidentate phosphine, arsine and/or stibine ligand, wherein the bidentate ligand has the general formula (I): R<1>R<2>-M<1>-R-M<2>-R<3>R<4> wherein M<1> and M<2> are independently P, As or Sb, R is a divalent organic bridging group, which bridging group. (c) an acid having a pKa less than 3, as measured at 18 DEG C in an aqueous solution.
Inventors:
DRENT EIT
JAGER WILLEM WABE
JAGER WILLEM WABE
Application Number:
PCT/EP2001/002903
Publication Date:
May 16, 2002
Filing Date:
March 14, 2001
Export Citation:
Assignee:
SHELL INT RESEARCH (NL)
International Classes:
B01J31/18; B01J31/24; C07B61/00; C07D223/10; C07C67/38; C07C253/30; C07C255/19; C07D201/08; B01J31/28; (IPC1-7): C07C253/30; C07C255/19; B01J31/24; B01J31/18
Domestic Patent References:
| WO1997030973A1 | 1997-08-28 |
Foreign References:
| DE19840253A1 | 2000-03-09 | |||
| EP0495548A2 | 1992-07-22 | |||
| US5679831A | 1997-10-21 |
Other References:
See also references of EP 1263713A2
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