3976-37-2

Basic information

• Product Name: 1,1'-Biphenyl, 2,4,4',6-tetramethyl-
• CAS NO: 3976-37-2
• Molecular Formula: C16H18
• Molecular Weight: 210.319
• Mol File: 3976-37-2.mol
• Article Data: 2

Chemical Properties

• CAS DataBase Reference: 1,1'-Biphenyl, 2,4,4',6-tetramethyl-(CAS DataBase Reference)
• NIST Chemistry Reference: 1,1'-Biphenyl, 2,4,4',6-tetramethyl-(3976-37-2)
• EPA Substance Registry System: 1,1'-Biphenyl, 2,4,4',6-tetramethyl-(3976-37-2)

Safety Data

• Hazardous Substances Data: 3976-37-2(Hazardous Substances Data)

Usage

General Description

1,1'-Biphenyl, 2,4,4',6-tetramethyl- is a chemical compound with the molecular formula C18H18. It is also known as 2,4,4',6-tetramethyl-1,1’-biphenyl or 2,4,6-TMT. 1,1'-Biphenyl, 2,4,4',6-tetramethyl- is a colorless, odorless solid that is insoluble in water but soluble in organic solvents. It is widely used as a high-temperature heat transfer fluid, particularly in the electronics industry. It is also used as a chemical intermediate in the production of various polymers and plastics. Additionally, 2,4,4',6-tetramethyl-1,1’-biphenyl is used in the manufacture of dyes, pigments, and other industrial chemicals. Overall, this compound has a range of industrial applications due to its stability at high temperatures and its chemical reactivity.

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Relevant articles and documents

Binuclear oxalamidinate complexes (MePd)2(oxam) and homoleptic complexes of the type [(THF)nLi4 (Me8)M2] and [(THF)4Li2 (Ph4)M] (M=Pd, Ni): Synthesis, structures and catalytic C-C linking reactions

The dinuclear methyl complexes 1 and 2 of the type [CH3 -Pd(oxam)Pd-CH3] were obtained by reaction of (COD)PdCH3(Cl) with the corresponding dilithium oxalic amidinates, prepared from LiBu and the oxalic amidines H2Y or H2Z (H2Y= N,N′-bis(2-pyridylethyl)-1, 2-bis-(2,4,6-trimethylphenyl-imino)-ethane-1,2-diamine; H2 Z = N,N ′-bis(diphenylphosphino-3-propyl)-1,2-bis-(2,4, 6-trimethylphenyl-imino)-ethane-1,2-diamine). Reaction of both 1 and 2 with an excess of LiCH3 results in the formation of the dimeric compound [(THF)4Li4(CH3) 8Pd2] (3). Similarly, monomeric phenyl complexes of the composition [(THF)4Li2M(C6 H5)4] (M=Pd (4), Ni (5)) were prepared. The complexes were characterized by elemental analysis, mass spectroscopy, 1H-NMR, 13C-NMR and 7Li-NMR spectroscopy, and by X-ray single-crystal diffraction analysis in the solid state. All complexes contain the metals in a planar-square environment. Compounds 1-3 and 4 are highly active, selective and long-living catalysts in the Heck reaction of 4-bromoacetophenone and n-butyl acrylate. Compound 5 and the related neutral ligand-free Ni complex [(THF)4Li4(CH3)8 Ni2] (6) are active catalysts for the Kumada cross-coupling of MesitylMgBr with 4-bromotoluene and are even able to couple the corresponding aryl chloride or aryl fluoride with MesitylMgBr.