Liu, Deng-Feng published the artcileRing-opening copolymerization of epoxides and anhydrides using manganese(III) asymmetrical Schiff base complexes as catalysts, Formula: C17H14N2O2, the publication is RSC Advances (2015), 5(5), 3854-3859, database is CAplus.
Based on a series of asym. Schiff base H2Ln (n = 1-4) ligands with different electronic and steric effects, a series of [Mn(Ln)Cl] complexes were obtained and shown to be effective catalysts in cyclohexene oxide and maleic anhydride, cyclohexene oxide and phthalic anhydride, styrene oxide and maleic anhydride or styrene oxide and phthalic anhydride ring-opening copolymerizations Through the structure design, the input of the electron-withdrawing Br substituent para to the phenoxide group of the complexes is quite beneficial to the improved activities. Moreover, both steric and electronic effects of a suitable MeO substituent at the ortho position of the phenoxide group have much more influence on the formation of alternating ring-opening copolymers than that of selected reaction conditions.
RSC Advances published new progress about 4551-69-3. 4551-69-3 belongs to pyrazoles-derivatives, auxiliary class Benzenes, name is 4-Benzoyl-5-methyl-2-phenyl-2,4-dihydro-3H-pyrazol-3-one, and the molecular formula is C17H14N2O2, Formula: C17H14N2O2.
Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics