title: Ru-Catalyzed Isomerization Provides Access to Alternating Copolymers via Ring-Opening Metathesis Polymerization.
abstract: We describe an isomerization-alternating ROMP protocol that gives linear copolymers with rigorous sequence alternation. Bicyclo[4.2.0]oct-7-ene-7-carboxamides of primary amines are isomerized in the presence of (3-BrPyr)2Cl2(H2IMes)Ru=CHPh to the corresponding bicyclo[4.2.0]oct-1(8)-ene-8-carboxamides in which the olefinic bond is tetrasubstituted. Theisomerizedamides undergo alternating ring-opening metathesis polymerization with cyclohexene to provide soluble and linear copolymers with molecular weights up to ∼130 kDa. This process provides efficient entry to strictly alternating copolymers that can display diverse functional groups.
authors.affiliation: Department of Chemistry, Stony Brook University , Stony Brook, New York 11794-3400, United States.
authors.forename: Li
authors.initials: L
authors.lastname: Tan
authors.affiliation: Department of Chemistry, Stony Brook University , Stony Brook, New York 11794-3400, United States.
authors.forename: Guofang
authors.initials: G
authors.lastname: Li
authors.affiliation: Department of Chemistry, Stony Brook University , Stony Brook, New York 11794-3400, United States.
authors.forename: Kathlyn A
authors.initials: KA
authors.lastname: Parker
authors.affiliation: Department of Chemistry, Stony Brook University , Stony Brook, New York 11794-3400, United States.
authors.forename: Nicole S
authors.initials: NS
authors.lastname: Sampson