912806-56-5

Basic information

• Product Name: 2,2''-diisopropyl-1,1':3',1'-terphenyl
• CAS NO: 912806-56-5
• Molecular Weight: 314.47
• Mol File: 912806-56-5.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2,2''-diisopropyl-1,1':3',1'-terphenyl(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2''-diisopropyl-1,1':3',1'-terphenyl(912806-56-5)
• EPA Substance Registry System: 2,2''-diisopropyl-1,1':3',1'-terphenyl(912806-56-5)

Safety Data

• Hazardous Substances Data: 912806-56-5(Hazardous Substances Data)

Upstream product

• 861718-25-4 lithium naphthalene 
• 912806-53-2 (2,4,6-tris[bis(trimethylsilyl)methyl]phenyl)(2,2''-diisopropyl-1,1':3',1'-terphenyl)dibromostannane 
• 10025-71-5 tellurium dichloride 
• 108-88-3 toluene 

Relevant articles and documents

Generation and reactions of overcrowded diaryldilithiostannane and diaryldipotassiostannane

Exhaustive reduction of an overcrowded dibromostannane bearing two bulky aromatic substituents, Tbt(Dip)SnBr2 {Tbt = 2,4,6- tris[bis(trimethylsilyl)methyl]phenyl; Dip = 2,6-diisopropylphenyl}, with an excess amount of lithium naphthalenide in THF at -78°C gave the corresponding dilithiostannane, Tbt(Dip)SnLi2, the generation of which was confirmed by trapping experiments with some electrophiles together with 119Sn and 7Li NMR spectroscopy. The diaryldilithiostannane was found to be stable in solution under an inert gas below -25°C. The potassium analogue, Tbt(Dip)-SnK2, was also generated by the reduction of the dibromostannane in THF at -78°C by the use of KC8 as a reductant. The reactions of dilithiostannane and dipotassiostannane obtained with o-dibromobenzene did not give a stannacyclopropabenzene derivative but an unexpected cyclization product, a stannacyclobutabenzene derivative, in contrast to the reactions of the corresponding dilithiosilane and dilithiogermane, Tbt(Dip)ELi2 (E = Si, Ge), with o-dibromobenzene leading to the formation of the corresponding metallacyclopropabenzenes as stable crystalline compounds. A preliminary result of the synthesis of a tin-tellurium double-bond compound from the dilithiostannane is also presented. Wiley-VCH Verlag GmbH & Co. KGaA, 2005.