Wang, Jianqun; Zhu, Yinuo; Li, Maosheng; Wang, Yanchao; Wang, Xianhong; Tao, Youhua published the artcile< Tug-of-War between Two Distinct Catalytic Sites Enables Fast and Selective Ring-Opening Copolymerizations>, HPLC of Formula: 627-27-0, the main research area is epoxide anhydride ring opening copolymerization thiourea boron catalyst; Differentiated Catalytic Sites; Organocatalysts; Polyester; Ring-Opening Copolymerizations; Tug-of-War.
Ring-opening copolymerizations have emerged as a powerful approach towards the creation of sustainable polymers. Typical H-bonding catalysts for ring-opening are subject to a single catalytic site. Here we describe a H-bond-donor/Lewis-acidic-boron organocatalyst featuring two distinct catalytic sites in one mol. The ring-opening copolymerization of epoxides with anhydride mediated by these modular, and tunable catalysts achieves high selectivity (>99% polyester selectivity) and markedly higher activity compared to either of the di-thiourea analogs or any combinations of them. Calculations and exptl. studies reveal that the superior catalytic performance arises from tug-of-war between two differentiated catalytic sites: thiourea pulls off the propagating chain-end from boron center, simultaneously enhancing the role of monomer activation and also nucleophilicity of the propagation intermediates.
Angewandte Chemie, International Edition published new progress about Crystal structure. 627-27-0 belongs to class alcohols-buliding-blocks, and the molecular formula is C4H8O, HPLC of Formula: 627-27-0.
Referemce:
Alcohol – Wikipedia,
Alcohols – Chemistry LibreTexts