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US 5,756,653 AGranted
Substituted polythiophenes from highly reactive zinc reagents
AssigneeBoard of Regents of the University of Nebraska
InventorReuben D. Rieke
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Abstract
A novel zerovalent zinc species and an organozinc reagent are disclosed. The zerovalent zinc species is directly produced by reaction of a reducing agent on a zinc salt, preferably Zn(CN).sub.2. The organozinc reagent results from the reaction of the zerovalent zinc species and an organic compound having one or more stable anionic leaving groups. These organozinc reagents include a wide spectrum of functional groups in the organic radical, and are useful in a variety of reactions schemes.
Claims4
A method of forming a polymer comprising:
- (a) combining a zerovalent highly reactive zinc species with an organic compound having at least two stable leaving groups to form a monozinc derivative of an organozinc reagent, wherein the organic radical of the monozinc derivative of the organozinc reagent is a substituted thiophene group;
- and
- (b) adding an effective amount of a Pd(O) catalyst to initiate the polymerization reaction.
A method of forming a polymer comprising:
- (a) combining a zerovalent highly reactive zinc species with an organic compound having at least two stable leaving groups to form a monozinc derivative of an organozinc reagent, wherein the organic radical of the monozinc derivative of the organozinc reagent is a substituted thiophene group;
- and
- (b) adding an effective amount of a Ni(II) catalyst to initiate the polymerization reaction.
Dependencies are inferred from the claim text.