A. Bader et al., FIRST RESOLUTION OF A FREE SECONDARY PHOSPHINE CHIRAL AT PHOSPHORUS, Journal of the Chemical Society, Chemical Communications, (12), 1994, pp. 1405-1406
A single diastereoisomer of (-)-menthylmesitylphosphine has been isola
ted in 94% purity, thereby effecting the first resolution of a free se
condary phosphine chiral at phosphorus.