1394844-93-9

Basic information

• Product Name: [(2,4-dimethylphenoxy)₂Ti(isopropoxy)₂]
• Synonyms: [(2,4-dimethylphenoxy)₂Ti(isopropoxy)₂]
• CAS NO: 1394844-93-9
• Molecular Weight: 408.374
• Mol File: 1394844-93-9.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: [(2,4-dimethylphenoxy)₂Ti(isopropoxy)₂](CAS DataBase Reference)
• NIST Chemistry Reference: [(2,4-dimethylphenoxy)₂Ti(isopropoxy)₂](1394844-93-9)
• EPA Substance Registry System: [(2,4-dimethylphenoxy)₂Ti(isopropoxy)₂](1394844-93-9)

Safety Data

• Hazardous Substances Data: 1394844-93-9(Hazardous Substances Data)

Upstream product

• 546-68-9 titanium(IV) isopropylate 
• 105-67-9 2,4-Xylenol 

Relevant articles and documents

New bis(aryloxy)-Ti(iv) complexes and their use for the selective dimerization of ethylene to 1-butene

New titanium complexes of general formula [(ArO)nTi(Oi-Pr) (4-n)] were synthesized and used as pre-catalysts for the selective dimerization of ethylene to 1-butene. The complexes were prepared in cyclohexane using [Ti(Oi-Pr)4] and one or two equivalents of the corresponding phenols (ArOH) at room temperature. In this work, both monodentate and chelating phenols were evaluated. For alkyl-substituted phenols, it was demonstrated that large steric hindrance at both ortho and ortho′ positions selectively yielded the mono-substituted complexes [(ArO)Ti(Oi-Pr)3]. Substitution at only one of the ortho positions allowed both the mono- and the di-substituted Ti complexes to be isolated. When a heteroatom was introduced on the phenol backbone, di-substitution systematically occurred except with phenols presenting a hemilabile -CH2NR2 group at the ortho position. Upon activation with 3 equiv. of AlEt3 at 20 bar and 60 °C, all the complexes selectively dimerized ethylene to 1-butene (>86% of butenes among which 99% of 1-butene). An increase of the steric bulk at the ortho position of the ligand or the introduction of a functional group led to decreased activity compared to [Ti(Oi-Pr)4].