55894-67-2

Upstream product

• 113034-77-8 cerium(III) 2,6-di-t-butyl-phenoxide 
• 51905-34-1 pentamethylcyclopentadienyllithium 
• 41823-71-6 bis(trimethylsilyl)methyllithium 
• 1516-95-6 2,6-di-tert-butyl-anisole 
• 128-39-2 2,6-di-tert-butylphenol 

Downstream Products

• 111024-63-6 1,6-bis<3,5-di-t-butyl-4-hydroxyphenyl)-2,5-dioxopyrrolidin-1-yl>hexane 
• 6386-38-5 methyl 3-(4-hydroxy-3,5-di-tert-butyl)phenylpropanoate 
• 82190-58-7 Ta(OAr-2,6-Bu(t)2)2Cl₃ 
• 111681-47-1 dichlorotris(2,6-di-t-butylphenoxo)tantalum(V) 
• 141607-48-9 NbO(2,6-di-t-butylphenoxide)3 
• 83584-98-9 monochlorotris(2,6-di-t-butylphenoxo)zirconium 
• 83584-99-0 monochlorotris(2,6-di-t-butylphenoxo)hafnium 
• 95045-72-0 dichlorobis(2,6-di-tert-butylphenoxido)titanium(IV) 
• 110527-87-2 bis(2,6-di-tert-butylphenoxide)bis{2-(6-methylpyridyl)methyl}hafnium 
• 82190-58-7 trichlorobis(2,6-di-t-butylphenoxo)tantalum(V) 
• 91229-84-4 -W(CHCMe₃)[O-2,6-C₆H₃(CMe₂CH₂)-(CMe₃)][O-2,6-C₆H₃(CMe₃)2]Cl 
• 82190-58-7 Ta(OC₆H₃(C(CH₃)3)2)2Cl₃ 
• 128-39-2 2,6-di-tert-butylphenol 
• 2455-14-3 3,5,3',5'-tetra-tert-butyl-4,4'-diphenoquinone 

Relevant academic research and scientific papers

Cerium Aryloxides as Precursors for Monopentamethylcyclopentadienyl Organocerium(III) Compounds; X-Ray Crystal Structure of (ν5-Pentamethylcyclopentadienyl)bis(2,6-di-t-butylphenoxo)cerium

Tris(2,6-di-t-butylphenoxo)cerium reacts with (C5Me5)Li in pentane to form (ν5-C5Me5)bis(2,6-di-t-butylphenoxo)cerium, whose structures was established by X-ray crystallography and which, on subsequent reaction with LiCH(SiMe3)2, gives a novel mono(C5Me5)cerium-bisalkyl complex, (C5Me5)Ce2.

Easier preparation of 2,6-Di-tert-butylphenyl derivatives 1

Despite steric shielding by the 2,6-di-tert-butylphenyl group (super-2,6-xylyl=xyl*), inexpensive sodium phenolate (xyl*-ONa) reacts with dimethyl sulfate to produce only xyl*-OCH3 (94%) with complete suppression of the alternative 4-methylation. Reductive cleavage of xyl*-OCH3 by elemental lithium with the help of an electron carrier generates xyl*-Li, which in turn yields xyl*-CO2H (63%). The corresponding 4-methyl-derivatives of these compounds were obtained analogously. The acid chloride xyl*-COCl (77% yield) acylates HalMgCH 2R to give only xyl*-COCH3 (86%) or xyl*-COEt (97%). These two ketones react with n-butyllithium (no carbonyl addition) and Cl-PO(OEt)2 to furnish only the enol phosphates xyl*-C(=CH 2)OPO(OEt)2 (84%) or xyl*-C(=CHCH 3)OPO(OEt)2 (up to 70%), respectively. Only 1,2-elimination occurs when the latter two products are treated with tert-butyllithium, affording xyl*-CCH (68%) or xyl*-CCMe (88%), respectively. Georg Thieme Verlag Stuttgart - New York.

First example of a neutral homoleptic uranium alkyl. Synthesis, properties, and structure of U[CH(SiMe3)2]3

The reaction of U(O-2,6-But2C6H3)3 with 3 equiv of LiCH(SiMe3)2 in hexane at ambient temperature provides royal blue U[CH(SiMe3)2]3 (1) in ca. 40% isolated yield. In the solid state, 1 is pyramidal with crystallographically imposed C3 symmetry, a U(1)-C(4) (i.e., U-Cα) bond length of 2.48 (2) A?, and a C(4)-U(1)-C(4′) bond angle of 107.7 (4)°. The molecular structure also features a γ-agostic interaction with three symmetry-related silyl methyl groups [U(1)-C(7) = 3.09 (2) A?]. 1 is thermally stable as a solid at room temperature but decomposes with loss of H2C(SiMe3)2 at ca. 60°C. Solutions of 1 in hexane or THF slowly decompose over the course of several hours. Reaction of UCl3(THF)x with 3 equiv of LiCH(SiMe3)2 in THF does not produce U[CH-(SiMe3)2]3 but rather a green ionic complex of formula [Li(THF)3] [UCl{CH(SiMe3)2}3].