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Substantially isotactic, linear, alternating copolymers of carbon monoxide and an olefin

Patent ·
OSTI ID:870434
;
The compound, [Pd(Me-DUPHOS)(MeCN).sub.2 ](BF.sub.4).sub.2, [Me-DUPHOS: 1,2-bis(2,5-dimethylphospholano)benzene] is an effective catalyst for the highly enantioselective, alternating copolymerization of olefins, such as aliphatic .alpha.-olefins, with carbon monoxide to form optically active, isotactic polymers which can serve as excellent starting materials for the synthesis of other classes of chiral polymers. For example, the complete reduction of a propylene-carbon monoxide copolymer resulted in the formation of a novel, optically active poly(1,4-alcohol). Also, the previously described catalyst is a catalyst for the novel alternating isomerization cooligomerization of 2-butene with carbon monoxide to form optically active, isotactic poly(1,5-ketone)
Research Organization:
Pennsylvania State University, University Park, PA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
DOE Contract Number:
FG02-84ER13295
Assignee:
The Penn State Research Foundation (University Park, PA)
Patent Number(s):
5,521,281
Application Number:
08/424,777
OSTI ID:
870434
Country of Publication:
United States
Language:
English

References (8)

The search for larger and more weakly coordinating anions journal May 1993
Efficient palladium catalysts for the copolymerization of carbon monoxide with olefins to produce perfectly alternating polyketones journal October 1991
Regioselectivity Control in the Palladium-Catalyzed Copolymerization of Propylene with Carbon Monoxide journal March 1992
Regio‐ and stereo‐selective alternating copolymerization of carbon monoxide with propene journal September 1993
Preparation and use of C2-symmetric bis(phospholanes): production of .alpha.-amino acid derivatives via highly enantioselective hydrogenation reactions journal November 1993
Stereochemistry of alternating copolymers of vinyl olefins with carbon monoxide journal June 1992
Mechanistic aspects of metal-catalyzed alternating copolymerization of olefins with carbon monoxide journal June 1993
Palladium(II) catalysts for living alternating copolymerization of olefins and carbon monoxide journal July 1992

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Substantially isotactic, linear, alternating copolymers of carbon monoxide and an olefin
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