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Publication - Professor Paul Pringle

    Phosphophosphidites Derived from BINOL

    Citation

    Gorman, A, Cross, J, Doyle, R, Leonard, T, Pringle, P & Sparkes, H, 2019, ‘Phosphophosphidites Derived from BINOL’. European Journal of Inorganic Chemistry, vol 2019., pp. 1633-1639

    Abstract


    Phosphophosphidites of the type R
    2
    P–P(binol) [where binol = the dianion of (S)-1,1′-bi-2-naphthol] are the phosphorus analogues of the ubiquitous phosphoramidites, R
    2
    N–P(binol) and are readily accessed by the chlorosilane elimination reaction between R
    2
    P–SiMe
    3
    and Cl–P(binol). The crystal structure of iPr
    2
    P–P(binol) (1) has been determined and shows a P–P bond length in the normal range. The solution reactions of 1 have been investigated, principally by
    31
    P NMR spectroscopy which has revealed that: (a) in contrast to the phosphoramidites, 1 is extremely moisture sensitive; (b) the P–P bond in 1 is cleaved upon reaction with H
    2
    O, MeOH or mesitol; (c) the P–O bonds in 1 are cleaved upon reaction with pyrrolidine; (d) the integrity of 1 is retained upon coordination to BH
    3
    or Mo
    0
    . The crystal structure of cis-[Mo(CO)
    4
    (1)
    2
    ] shows that 1 is bound to the Mo at the P(binol) site and the ν
    CO
    of 2032 cm
    -1
    indicates that 1 has similar ligand properties to a phosphonite.

    Full details in the University publications repository