title: Alternating copolymerization of limonene oxide and carbon dioxide.
abstract: The alternating copolymerization of (R)- or (S)-limonene oxide and CO2 using beta-diiminate zinc acetate catalysts is reported. At 100 psi CO2 and 25 degrees C, the catalyst exhibits a high selectivity for the trans isomer and produces regioregular polycarbonate. The copolymer contains >99% carbonate linkages, a narrow molecular weight distribution, and an Mn value consistent with the [epoxide]/[Zn] ratio.
authors.affiliation: Department of Chemistry and Chemical Biology, Baker Laboratory, Cornell University, Ithaca, NY 14853, USA.
authors.forename: Christopher M
authors.initials: CM
authors.lastname: Byrne
authors.forename: Scott D
authors.initials: SD
authors.lastname: Allen
authors.forename: Emil B
authors.initials: EB
authors.lastname: Lobkovsky
authors.forename: Geoffrey W
authors.initials: GW
authors.lastname: Coates
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D002957:Citrus; D000081005:Cyclohexane Monoterpenes; D008958:Models, Molecular; D039821:Monoterpenes / Q000737:chemistry*; D010938:Plant Oils / Q000737:chemistry; D011108:Polymers / Q000138:chemical synthesis*
chemical_list: D000081005:Cyclohexane Monoterpenes; D039821:Monoterpenes; D010938:Plant Oils; D011108:Polymers; C028940:limonene-1,2-epoxide; D002245:Carbon Dioxide