351002-34-1

Basic information

• Product Name: 2,2'-dibromo-5,5'-bis(4-methoxyphenyl)-4,4'-di-tert-butylbiphenyl
• Synonyms: 2,2'-dibromo-5,5'-bis(4-methoxyphenyl)-4,4'-di-tert-butylbiphenyl
• CAS NO: 351002-34-1
• Molecular Weight: 636.467
• Mol File: 351002-34-1.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: 2,2'-dibromo-5,5'-bis(4-methoxyphenyl)-4,4'-di-tert-butylbiphenyl(CAS DataBase Reference)
• NIST Chemistry Reference: 2,2'-dibromo-5,5'-bis(4-methoxyphenyl)-4,4'-di-tert-butylbiphenyl(351002-34-1)
• EPA Substance Registry System: 2,2'-dibromo-5,5'-bis(4-methoxyphenyl)-4,4'-di-tert-butylbiphenyl(351002-34-1)

Safety Data

• Hazardous Substances Data: 351002-34-1(Hazardous Substances Data)

Upstream product

• 1625-91-8 4,4'-di-tert-butylbiphenyl 
• 696-62-8 para-iodoanisole 
• 351002-31-8 2,2',5,5'-tetrabromo-4,4'-di-tert-butylbiphenyl 

Relevant articles and documents

A Greek cross dodecaphenylene: Sparteine-mediated asymmetric synthesis of chiral D2-symmetric π-conjugated tetra-o-phenylenes

The asymmetric synthesis of a chiral, nonracemic π-conjugated system with D2 point group of symmetry, dodecaphenylene 4 is described. In the key step, (-)-sparteine- and Cu(II)-mediated oxidation of 2,2′-dilithio-1,1′-biaryls in ether gives the corresponding dimers, tetra-o-phenylenes, in 80% isolated yields and 50-60% ee's. X-Ray crystallography confirms the structure of rac-4 and its molecular shape of a Greek cross. The torsional angles between the benzene rings in the tetra-o-phenylene core of rac-4 are in the 56.5-71.0° range. However, CD and UV spectra of 4 in CH2Cl2 are consistent with significant conjugation between the four terphenyl moieties.