Names | |
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IUPAC name
(S)-(+)-4,12-Bis(diphenylphosphino)-[2.2]-paracyclophane; (R)-(−)-4,12-Bis(diphenylphosphino)-[2.2]-paracyclophane
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Other names
(S)-Phanephos; (R)-Phanephos
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Identifiers | |
CAS Number
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3D model (JSmol)
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ChemSpider |
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ECHA InfoCard | 100.217.129 |
EC Number |
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PubChem CID
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CompTox Dashboard (EPA)
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InChI
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SMILES
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Properties | |
Chemical formula
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C40H34P2 |
Molar mass | 576.660 g·mol−1 |
Appearance | White to off-white powder or crystals |
Melting point | 222 to 225 °C (432 to 437 °F; 495 to 498 K) |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Phanephos is an organophosphorus compound with the chemical formula (C2H4)2(C6H3PPh2)2 (Ph = C6H5). It is a white solid that is soluble in organic solvents. It is an example of a chiral C2-symmetric diphosphine ligand used in asymmetric hydrogenation. Many substituents have been introduced in place of the phenyl groups, e.g., i-Pr, C6H11, etc and a variety of chiral diphosphine ligands have been reported in asymmetric catalysis since the 1960s.