Patent ID: 8795647

Claim:
A method for producing a polymer comprising the repeating unit (Ia) or (Ib): which comprises contacting an olefin of structure (IIa) or (IIb) with a cyclobutene of structure (III) in the presence of an olefin metathesis catalyst, wherein R is selected form the group consisting of H, C 1 -C 20 alkyl, C 2 -C 20 alkenyl, C 3 -C 8 cycloalkyl, heterocyclyl, aryl, aralkyl, C 1 -C 20 alkoxy, C 1 -C 20 alkylthio, C 2 -C 20 alkenyloxy, C 2 -C 20 alkenylthio, C 3 -C 6 cycloalkyloxy, C 3 -C 6 cycloalkylthio, aryloxy, arylthio, heterocyclyloxy, or heterocyclylthio; R 1′ and R 1″ through R 6′ and R 6″ are independently selected from the group consisting of H, C 1 -C 20 alkyl, C 2 -C 20 alkenyl, C 3 -C 6 cycloalkyl, C 1 -C 20 hetero-substituted alkyl, aryl, heterocyclyl, aralkyl, C 1 -C 20 alkoxy, C 2 -C 20 alkenyloxy, C 3 -C 6 cycloalkyloxy, aryloxy, heterocyclyloxy, and halogen; or one or more or pairs of substituents selected from the group consisting of R 1′ —R 2′ , R 2′ —R 3′ , R 3′ —R 4′ , and R 5′ —R 6′ , together with the carbons to which they are attached, form a carbocyclic or pairs of substituents selected from the group consisting of R 1′ -R 2′ , R 2′ -R 3′ , R 3′ -R 4′ , and R 5′ -R 6′ , together with the carbons R 7 and R 8 are independently selected from the group consisting of H, C 1 -C 20 alkyl, C 1 -C 20 hetero-substituted alkyl, C 3 -C 6 cycloalkyl, aryl, heterocyclyl, C 1 -C 20 alkoxy, C 1 -C 20 acyloxy, C 1 -C 20 substituted-amino, C 1 -C 20 protected-amino, C 3 -C 6 cycloalkyloxy, aryloxy, heterocyclyloxy, and halogen; with the proviso that any carbon-carbon double bonds in R or in R 1′ and R 1″ through R 6′ and R 6″ are essentially unreactive toward metathesis reactions with the catalyst.