Reference of 7181-87-5. Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 7181-87-5, Name is 1,3-Dimethyl-1H-benzo[d]imidazol-3-ium iodide. In a document type is Article, introducing its new discovery.
Ring-opening polymerization and copolymerization of propylene oxide catalyzed by N-heterocyclic carbenes
Herein, we demonstrate the application of adducts of various N-heterocyclic carbenes (NHCs) with CO2 (i.e., NHC-CO2) as precatalysts in the ring-opening homopolymerization of propylene oxide (PO) onto diethylene glycol as a chain starter to give well-defined polyether diols. The influence of various NHCs on the structure of the polymers and the mechanism of this reaction were investigated both experimentally and through DFT calculations. With this methodology, copolymers of PO and the monomers epsilon-caprolactone and (S,S)-lactide are accessible. Getting ROPed in: The influence and reaction mechanism of various CO2 adducts of N-heterocyclic carbenes in the ring-opening homopolymerization of propylene oxide (PO) onto diethylene glycol as the chain starter is investigated. Not only are well-defined polyether diols accessible, but also copolymers of PO and other monomers, such as epsilon-caprolactone and (S,S)-lactide. Copyright
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Chiral Catalysts,
Chiral catalysts – SlideShare