Title:
PROCESS FOR THE PREPARATION OF LIGANDS FOR OLEFIN POLYMERIZATION CATALYSTS
Document Type and Number:
WIPO Patent Application WO2002036585
Kind Code:
A3
Abstract:
Processes for the preparation of 4,5-bisimino-[1,3]dithiolanes and 2,3-bisimino-[1,4]dithianes are described. The processes involve conversion of an oxalamide to a dithiooxalamide, followed by conversion of the dithiooxalamide to either a 4,5-bisimino-[1,3]dithiolane or a 2,3-bisimino-[1,4]dithiane.
Inventors:
PONASIK JAMES ALLEN JR
MOODY LESLIE SHANE
MACKENZIE PETER BORDEN
MOODY LESLIE SHANE
MACKENZIE PETER BORDEN
Application Number:
PCT/US2001/042976
Publication Date:
December 27, 2002
Filing Date:
November 06, 2001
Export Citation:
Assignee:
EASTMAN CHEM CO (US)
International Classes:
C07C251/24; C07D207/50; C07D339/06; C07D339/08; C07D409/14; C07F15/04; C08F10/00; (IPC1-7): C07D339/08; C07D339/06; C07D409/14; C08F10/02
Domestic Patent References:
| WO1998040374A2 | 1998-09-17 | |||
| WO2000050470A2 | 2000-08-31 |
Other References:
CARPINO L A: "Alkaline Degradation of 1,1-Disubstituted 2-Arenesulfonhydrazides. Synthesis and Reactivity of 1-Amino-2,5-diphenyl- and -2,3,4,5-tetraphenylpyrrole", J.ORG.CHEM., vol. 30, 1965, pages 736 - 739, XP002200613
ENDERS D ET AL: "DIASTEREO-AND ENANTIOSELECTIVE SYNTHESIS OF C2-SYMMETRIC, PROTECTED1,N-DIAMINES FROM DIALDEHYDES", ANGEWANDTE CHEMIE. INTERNATIONAL EDITION, VERLAG CHEMIE. WEINHEIM, DE, vol. 35, no. 19, 1996, pages 2261 - 2263, XP000971190, ISSN: 0570-0833
ENDERS D ET AL: "DIASTEREO-AND ENANTIOSELECTIVE SYNTHESIS OF C2-SYMMETRIC, PROTECTED1,N-DIAMINES FROM DIALDEHYDES", ANGEWANDTE CHEMIE. INTERNATIONAL EDITION, VERLAG CHEMIE. WEINHEIM, DE, vol. 35, no. 19, 1996, pages 2261 - 2263, XP000971190, ISSN: 0570-0833
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