M. Yoshifuji, N. Shinohara, Kozo Toyota
Oct 21, 1996
Citations
0
Influential Citations
27
Citations
Journal
Tetrahedron Letters
Abstract
Abstract 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-tri- t -butylphenyl)phosphinidenephosphino}phenyl]ethane; the photolysis of the compound gave E -bis(2,4,6-tri- t -butylphenyl)diphosphene and an internal Z-diphosphene; the tungsten complex of the latter was analyzed by X-ray crystallography.