2-(5-Bromo-2-methyl-2H-indazol-3-yl)-2-propanol
CAS Number:
1823787-20-7
Molecular Formula:
C11H13BrN2O
Novel chromium complexes with a [OSSO]-type bis(phenolato) dianionic ligand mediate the alternating ring-opening copolymerization of epoxides and phthalic anhydride
Literature Information
Publication Date
2015-07-21
DOI
10.1039/C5PY01040C
Impact Factor
5.582
Authors
Gaoshan Si, Li Zhang, Bing Han, Zhongyu Duan, Boqian Li, Jincheng Dong, Xiangqing Li, Binyuan Liu
View Original
Abstract
Four new homogeneous chromium complexes with [OSSO]-type bis(phenolato) dianionic ligand catalysts for the ring-opening copolymerization of phthalic anhydride (PA) and epoxides are reported. Through the structure design, the ligand with a cyclohexylene ring backbone of the chromium complexes is quite beneficial to improving the activity. Of all the cocatalysts employed, DMAP is found to be the most efficient. 1H NMR spectra of the copolymers confirmed the alternating microstructures. This is the first example of a well-defined metal complex with a soft Lewis base as donor for the efficient copolymerization of anhydride and epoxides. Additionally, we demonstrate that poly(4-VCHO-alt-PA) can be conveniently functionalized using a robust free-radical mediated thiol–ene reaction of the pendant vinyl groups.
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Source Journal
Polymer Chemistry
CiteScore:
8.6
Self-citation Rate:
7.3%
Articles per Year:
457
Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.
Recommended Compounds
![2-[2-(2-Methoxyethoxy)ethoxy]-2-methylpropane structure](https://static.chemtradehub.com/structs/527/52788-79-1-71c1.webp "2-[2-(2-Methoxyethoxy)ethoxy]-2-methylpropane structure")
![3-(benzotriazol-1-yl)-N-[[2-[(3-bromophenyl)methoxy]phenyl]methylideneamino]propanamide structure](https://static.chemtradehub.com/structs/559/5595-78-8-0a32.webp "3-(benzotriazol-1-yl)-N-[[2-[(3-bromophenyl)methoxy]phenyl]methylideneamino]propanamide structure")
3-(benzotriazol-1-yl)-N-[[2-[(3-bromophenyl)methoxy]phenyl]methylideneamino]propanamide
CAS Number:
5595-78-8
Molecular Formula:
C32H52O2
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