1208539-37-0

Basic information

• Product Name: C₃₁H₃₉O₂P
• Synonyms: C₃₁H₃₉O₂P
• CAS NO: 1208539-37-0
• Molecular Weight: 474.623
• Mol File: 1208539-37-0.mol

Chemical Properties

• CAS DataBase Reference: C₃₁H₃₉O₂P(CAS DataBase Reference)
• NIST Chemistry Reference: C₃₁H₃₉O₂P(1208539-37-0)
• EPA Substance Registry System: C₃₁H₃₉O₂P(1208539-37-0)

Safety Data

• Hazardous Substances Data: 1208539-37-0(Hazardous Substances Data)

Upstream product

• 96-76-4 2,4-di-tert-Butylphenol 
• 110-87-2 3,4-dihydro-2H-pyran 
• 1100360-55-1 C₁₉H₃₀O₂ 
• 1079-66-9 chloro-diphenylphosphine 

Downstream Products

• 185509-32-4 (2-diphenylphosphanyl-4,6-di(tert-butyl))phenol 
• 1208539-48-3 2,4-di-tert-butyl-6-diphenylphosphinoyl-phenol 

Relevant articles and documents

Efficient copolymerization of ethylene with norbornene or its derIVatIVes using half-metallocene zirconium(IV) catalysts

A series of half-metallocene zirconium complexes CpZr(thf)Cl2[O-2,4-tBu-6-(P-PhR)C6H2] (Cp = C5H5, 2a: R = Me, 2b: R = tBu, 2c: R = Ph, 2d: R = 4-F-Ph) have been synthesized by r

Synthesis and characterization of novel half-metallocene-type group IV complexes containing phosphine oxide - Phenolate chelating ligands and their application to ethylene polymerization

A series of novel half-metallocene-type group IV metal complexes containing phosphine oxide-phenolate chelating ligands of type CpMCl2[O-2R 1-4R2-6(Ph2P=O)C6H2] (Cp = C5H5, M = Ti, 2a: R1 = R2 = H; 2b: R1 = Ph, R2 = H; 2c: R1 = tBu, R2 = H; 2d: R1 = R2 = tBu; M = Zr, 3b: R1 = Ph, R2 = H; 3c: R1 = tBu, R2 = H; 3d, R1 = R2 = tBu) have been synthesized in high yields (60-76%) from CpMCl3 (M = Ti, Zr) with 1.0 equiv of 2R1-4R2-6(Ph2P=O)C 6H2OH in THF and in the presence of triethylamine, and the complexes were identified by NMR and mass spectra as well as elemental analysis. Structures for 2a-d and 3d were further confirmed by X-ray crystallography. Complexes 2a-d adopt a five-coordinate, distorted square-pyramidal geometry around the titanium center. Complex 3d has a six-coordinate, distorted octahedral geometry around the zirconium center, in which the equatorial positions are occupied by oxygen atoms of the chelating phosphine oxide-phenolate ligand and two chlorine atoms. The cyclopentadienyl ring and the oxygen atom of the THF molecule are coordinated on the axial position. When activated by modified methylaluminoxane, all complexes exhibited moderate to high activities toward ethylene polymerization, giving high molecular weight polymer with a unimodal molecular weight distribution. The substituents on ligands and the metal center as well as the reaction conditions have a profound effect on the polymerization. It should be noted that zirconium complexes 3b-d displayed notable ethylene polymerization activity even at high temperature (75 C). Moreover, using Ph3CB(C6F 5)4/i-Bu3Al in place of MMAO as a cocatalyst, 3b-d also generate high molecular weight polymer with high efficiency under the same conditions.

Ethylene polymerization by the chromium catalysts based on bidentate [O, P=O] or [S, P] ligands

Novel chromium catalysts based on bidentate phenoxy- phosphinoyl (HO-2R1-4R2-6(Ph2P=O)C6H2: R1 = R2 = H, 3a; R1 = tBu, R2 = H, 3b; R1 = R2 = tBu, 3c; R1 = R2/sub