| Abstract
| - Reaction of (S)-2‘-boranatodiphenylphosphino-2-diphenylphosphinyl-1,1‘-binaphthyl (3, boranecomplex of BINAP monoxide) with an excess of n-butyllithium in THF at −78 °C brought about aselective cleavage of the carbon−phosphorus bond between the binaphthyl and diphenylphosphinylgroups to generate the binaphthyllithium 14, the treatment of which with electrophiles MeOD, I2,and ClSnMe3 gave, after removal of the borane, the corresponding 2‘-substituted 2-diphenylphosphino-1,1‘-binaphthyls (E-MOP 9: E = D, I, SnMe3), without loss of the enantiomeric purity.
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