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((2R,3R)-butane-2,3-diyl)bis(diphenylphosphane)

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Origin: China

CasNo: 74839-84-2

specification: 99%min

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    CAS No.: 74839-84-2 Formula: C28H28P2 Molecular Weight: 426.46900
     

    Description

    Chiraphos is a chiral diphosphine employed as a ligand in organometallic chemistry. This bidentate ligand chelates metals via the two phosphine groups. Its name is derived from its description — being both chiral and a phosphine. Chiraphos is available in two enantiomeric forms, S,S and R,R, each with C2 symmetry.
     

    Basic Info

    Chemical Name ((2R,3R)-butane-2,3-diyl)bis(diphenylphosphane)
    Synonyms

    (R,R)-2,3-bis(diphenylphosphanyl)butane;
    (2R,3R)-(+)-2,3-BIS(DIPHENYL PHOSPHINO)BUTANE;
    bis(diphenylphosphino)-1,2-dimethylethane;
    R,R-Chiraphos;
    (2R,3R)-(+)-Bis(diphenylphosphino)butane (R,R)-CHIRAPHOS;
    (2R,3R)-2,3-Bis(diphenylphosphino)butan;
    (-)-(2S,3S)-bis(diphenylphosphino)butane;

    CAS No. 74839-84-2
    Molecular Formula C28H28P2
    Molecular Weight 426.46900
    PSA 27.18000
    LogP 6.02920
     

    Properties

    Boiling Point 529.2ºC at 760 mmHg
    Melting Point 104-109ºC
    Flash Point 291.2ºC
     

    Safety Info

    Safety Statements 36/37/39-26-37/39
    Risk Statements R36/37/38
    Hazard Codes Xi
     

    Synthesis Route

    (R,R)-2,3-Bis(diphenylphosphinoyl)butane→((2R,3R)-butane-2,3-diyl)bis(diphenylphosphane)
    2,3-di[bis(phenylphosphinyl)]buta-1,3-diene→((2R,3R)-butane-2,3-diyl)bis(diphenylphosphane)
    Chlorodiphenylphosphine→((2R,3R)-butane-2,3-diyl)bis(diphenylphosphane)
     

    Precursor

    Chlorodiphenylphosphine
    2,3-di[bis(phenylphosphinyl)]buta-1,3-diene
    Triphenylphosphine
    (R,R)-2,3-Bis(diphenylphosphinoyl)butane

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