Separation of enantiomers of axially dissymmetric 1,3-bis(2,4,6-tri-t-butylphenyl)-1,3-diphospha-allene was successful for the first time by h.p.l.c. with a chiral (+)-poly(triphenylmethyl methacrylate) column and the c.d. spectrum of the optically pure (–)-phospha-allene was recorded; racemization occurred on exposure to light but the rate was very slow in the dark.
M. Yoshifuji, K. Toyota, T. Niitsu, N. Inamoto, Y. Okamoto and R. Aburatani, J. Chem. Soc., Chem. Commun., 1986, 1550 DOI: 10.1039/C39860001550
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