Application of 1,2-bis(2-bromo-3,5-di-t-butylphenyl)ethane to preparation of compounds having two diphosphene units

Article abstract of DOI:10.1016/0040-4039(96)01786-8

A sterically crowded bromobenzene, 1,2-bis(2-bromo-3,5-di-t-butylphenyl)ethane, was prepared and converted to the corresponding phosphonous dichloride, which reacted with lithium (2,4,6-tri-t-butylphenyl)phosphide to give 1,2-bis[3,5-di-t-butyl-2-{(2,4,6-