cas 57148-86-4, 3-(2-Hydroxy-5-methylphenyl)pyrazole | Articles data ｜lookchem

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57148-86-4

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Catalysis and kinetics for alternating copolymerization of carbon dioxide with epoxides using dinuclear nickel catalysts of pyrazolyl based diamine-bisphenolate ligands
The synthesis of structurally well-characterized dinuclear nickel complexes bearing a new type of pyrazolyl based diamine-bisphenolate ligand was reported for the first time. Catalysis towards nickel-catalyzed copolymerization of CO2 with cyclohexene oxide (CHO) by these newly prepared bimetallic complexes was systematically investigated. Particularly, dinickel complex 4 supporting 2-nitrophenoxide coligands was demonstrated to effectively catalyze CO2-copolymerization of CHO, 4-vinyl-1,2-cyclohexene oxide or cyclopentene oxide, generating the corresponding CO2-based polycarbonates with >99% carbonate linkages under optimal conditions. Kinetic studies of CO2/CHO copolymerization revealed that such copolymerization catalysis is first-order in dinickel complex 4 and second-order in CHO concentration.
Chen, Chi-Tien,Ko, Bao-Tsan,Su, Yu-Chia
(2020)
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Analogues with a 1,2 benzisoxazole nucleus of biologically active indole derivatives. III. Tryptamine and Gramine isosters
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Pigini,Giannella,Gualtieri,et al.
p. 29 - 32
(2007/10/04)

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Chemical Properties

Melting Point: 105-107°C
Boiling Point: 373.4 °C at 760 mmHg
Flash Point:179.6 °C
Density: 1.235 g/cm³
PSA: 48.91000
LogP: 2.09070

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