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

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)
 [1];  [1]
  1. (State College, PA)
Issue Date:
OSTI Identifier:
Penn State Research Foundation (University Park, PA) CHO
Patent Number(s):
US 5521281
Contract Number:
Research Org:
Pennsylvania State Univ., University Park, PA (United States)
Country of Publication:
United States
substantially; isotactic; linear; alternating; copolymers; carbon; monoxide; olefin; compound; pd; me-duphos; mecn; bf; 2-bis; 5-dimethylphospholano; benzene; effective; catalyst; highly; enantioselective; copolymerization; olefins; aliphatic; alpha; -olefins; form; optically; active; polymers; serve; excellent; starting; materials; synthesis; chiral; example; complete; reduction; propylene-carbon; copolymer; resulted; formation; novel; poly; 4-alcohol; previously; described; isomerization; cooligomerization; 2-butene; 5-ketone; starting material; carbon monoxide; starting materials; optically active; previously described; active poly; bed catalyst; effective catalyst; isotactic polymers; /528/525/