Matches in SemOpenAlex for { <https://semopenalex.org/work/W2059432899> ?p ?o ?g. }
- W2059432899 endingPage "3734" @default.
- W2059432899 startingPage "3729" @default.
- W2059432899 abstract "Well-defined dialkylgallium alkoxides derived from (S)-methyl lactate, (S,S)-[Me2Ga(μ-OCH(Me)CO2Me)]2 (1), and 2-methoxyethanol, [Me2Ga(μ-OCH2CH2OMe)]2 (2), have been used as model complexes for the ring-opening polymerization of lactide. (S,S)-[Me2Ga(μ-OCH(Me)CO2Me)]2 (1) can polymerize rac-lactide in solution in a living manner to give atactic polylactide (PLA). The addition of Lewis base to 1 gives heterotactically enriched polylactide at 40 °C, in CH2Cl2 with 6 equiv of THF (Pr = 0.60, Pr = probability of heterotactic enchainment) and in THF (Pr = 0.68) or in CH2Cl2 with 6 equiv of γ-picoline (Pr = 0.78), which reveals that heteroselectivity is strongly related to coordination efficiency of a Lewis base to gallium. The polymerization with 1 at 40 °C is living, as evidenced by the narrow polydispersities that remain essentially constant during the polymerizations. A temperature increase to 70 °C leads to transesterification reactions and to a decrease in heteroselectivity. Despite the latter, heterotacticly enriched PLA can be obtained in the melt at 130 °C. [Me2Ga(μ-OCH2CH2OMe)]2 (2) with achiral alkoxide ligands revealed essentially the same activity and stereoselectivity as 1, indicating a chain-end control mechanism. The application of gallium complexes for the controlled and stereoselective polymerization of rac-lactide and the effect of Lewis base on the stereoselectivity were discussed." @default.
- W2059432899 created "2016-06-24" @default.
- W2059432899 creator A5012292818 @default.
- W2059432899 creator A5023111046 @default.
- W2059432899 creator A5067619388 @default.
- W2059432899 date "2010-08-06" @default.
- W2059432899 modified "2023-10-17" @default.
- W2059432899 title "Heteroselective Polymerization of <i>rac</i>-Lactide in the Presence of Dialkylgallium Alkoxides: The Effect of Lewis Base on Polymerization Stereoselectivity" @default.
- W2059432899 cites W1837430940 @default.
- W2059432899 cites W1967225109 @default.
- W2059432899 cites W1967984957 @default.
- W2059432899 cites W1974766555 @default.
- W2059432899 cites W1976219946 @default.
- W2059432899 cites W1983385876 @default.
- W2059432899 cites W1985269719 @default.
- W2059432899 cites W1985570466 @default.
- W2059432899 cites W1992806235 @default.
- W2059432899 cites W2000855711 @default.
- W2059432899 cites W2010337380 @default.
- W2059432899 cites W2012233921 @default.
- W2059432899 cites W2015784993 @default.
- W2059432899 cites W2020606114 @default.
- W2059432899 cites W2021795513 @default.
- W2059432899 cites W2024075647 @default.
- W2059432899 cites W2024262973 @default.
- W2059432899 cites W2028601002 @default.
- W2059432899 cites W2043630753 @default.
- W2059432899 cites W2046241420 @default.
- W2059432899 cites W2047411892 @default.
- W2059432899 cites W2047943168 @default.
- W2059432899 cites W2049464161 @default.
- W2059432899 cites W2055180209 @default.
- W2059432899 cites W2057765228 @default.
- W2059432899 cites W2063661658 @default.
- W2059432899 cites W2064824669 @default.
- W2059432899 cites W2065389010 @default.
- W2059432899 cites W2082264584 @default.
- W2059432899 cites W2083376439 @default.
- W2059432899 cites W2085577464 @default.
- W2059432899 cites W2086946175 @default.
- W2059432899 cites W2089033485 @default.
- W2059432899 cites W2092999693 @default.
- W2059432899 cites W2098365006 @default.
- W2059432899 cites W2139065377 @default.
- W2059432899 cites W2145778728 @default.
- W2059432899 cites W2153019818 @default.
- W2059432899 cites W2160466249 @default.
- W2059432899 cites W2170686804 @default.
- W2059432899 cites W4242390450 @default.
- W2059432899 doi "https://doi.org/10.1021/om100110p" @default.
- W2059432899 hasPublicationYear "2010" @default.
- W2059432899 type Work @default.
- W2059432899 sameAs 2059432899 @default.
- W2059432899 citedByCount "61" @default.
- W2059432899 countsByYear W20594328992012 @default.
- W2059432899 countsByYear W20594328992013 @default.
- W2059432899 countsByYear W20594328992014 @default.
- W2059432899 countsByYear W20594328992015 @default.
- W2059432899 countsByYear W20594328992016 @default.
- W2059432899 countsByYear W20594328992017 @default.
- W2059432899 countsByYear W20594328992018 @default.
- W2059432899 countsByYear W20594328992019 @default.
- W2059432899 countsByYear W20594328992020 @default.
- W2059432899 countsByYear W20594328992021 @default.
- W2059432899 countsByYear W20594328992022 @default.
- W2059432899 crossrefType "journal-article" @default.
- W2059432899 hasAuthorship W2059432899A5012292818 @default.
- W2059432899 hasAuthorship W2059432899A5023111046 @default.
- W2059432899 hasAuthorship W2059432899A5067619388 @default.
- W2059432899 hasConcept C134306372 @default.
- W2059432899 hasConcept C155647269 @default.
- W2059432899 hasConcept C161790260 @default.
- W2059432899 hasConcept C163638829 @default.
- W2059432899 hasConcept C178790620 @default.
- W2059432899 hasConcept C181647583 @default.
- W2059432899 hasConcept C185592680 @default.
- W2059432899 hasConcept C188027245 @default.
- W2059432899 hasConcept C203897987 @default.
- W2059432899 hasConcept C2776743539 @default.
- W2059432899 hasConcept C2777241282 @default.
- W2059432899 hasConcept C2778839380 @default.
- W2059432899 hasConcept C33923547 @default.
- W2059432899 hasConcept C42058472 @default.
- W2059432899 hasConcept C44228677 @default.
- W2059432899 hasConcept C521977710 @default.
- W2059432899 hasConceptScore W2059432899C134306372 @default.
- W2059432899 hasConceptScore W2059432899C155647269 @default.
- W2059432899 hasConceptScore W2059432899C161790260 @default.
- W2059432899 hasConceptScore W2059432899C163638829 @default.
- W2059432899 hasConceptScore W2059432899C178790620 @default.
- W2059432899 hasConceptScore W2059432899C181647583 @default.
- W2059432899 hasConceptScore W2059432899C185592680 @default.
- W2059432899 hasConceptScore W2059432899C188027245 @default.
- W2059432899 hasConceptScore W2059432899C203897987 @default.
- W2059432899 hasConceptScore W2059432899C2776743539 @default.
- W2059432899 hasConceptScore W2059432899C2777241282 @default.
- W2059432899 hasConceptScore W2059432899C2778839380 @default.
- W2059432899 hasConceptScore W2059432899C33923547 @default.