Tsai, Chen-Yen’s team published research in RSC Advances in 4 | CAS: 4551-69-3

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 C6H12F3NO5S, Product Details of C17H14N2O2.

Tsai, Chen-Yen published the artcileRing-opening polymerization of cyclic esters initiated by zirconium, titanium and yttrium complexes, Product Details of C17H14N2O2, the publication is RSC Advances (2014), 4(28), 14527-14537, database is CAplus.

A series of dinuclear zirconium [(Ln)Zr(OiPr)2]2[(μ-OiPr)2] (1–3, n = 1-3) as well as mononuclear titanium [(L3)Ti(OiPr)2] (4), yttrium [(L2)YCl] (5) and zirconium [(Ln)Zr(OiPr)2] (6, n = 4; 7, n = 5) salen-type complexes (Ln = dianionic [ONNO]-tetradentate ancillary ligand) have been prepared and characterized. Dinuclear zirconium salen complexes [(Ln)Zr(OiPr)2]2[(μ-OiPr)2] (1–3) showed effective activity toward the ring opening polymerization of lactides and ε-caprolactone. However, mononuclear titanium, yttrium and zirconium complexes 4–7 are almost inactive for the ROP of L-lactide. Solvent-free bulk polymerization of L-lactide initiated by dinuclear zirconium complex 2 with a conversion > 90% can be achieved within 10 min, yielding high mol. weight polylactide with low polydispersity index. Kinetic studies reveal the ROP of L-lactide initiated by dinuclear zirconium complex 3 has a first-order dependency on [LA].

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 C6H12F3NO5S, Product Details of C17H14N2O2.

Referemce:
https://en.wikipedia.org/wiki/Pyrazole,
Pyrazoles – an overview | ScienceDirect Topics