Names | |
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IUPAC name
O-Isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane
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Other names
(−)-2,3-O-Isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane
(−)-1,4-Bis(diphenylphosphino)-1,4-dideoxy-2,3-O-isopropylidene-L-threitol | |
Identifiers | |
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3D model (JSmol)
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ChemSpider |
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PubChem CID
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UNII |
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CompTox Dashboard (EPA)
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Properties | |
C31H32O2P2 | |
Molar mass | 498.543 g·mol−1 |
Appearance | White solid |
Melting point | 86 to 89 °C (187 to 192 °F; 359 to 362 K) |
Insoluble | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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DIOP (2,3-O-isopropylidene-2,3-dihydroxy-1,4-bis(diphenylphosphino)butane) is an organophosphorus compound that is used as a chiral ligand in asymmetric catalysis. It is a white solid that is soluble in organic solvents.
DIOP is prepared from the acetonide of d,l-tartaric acid, which is reduced prior to attachment of the PPh2 substituents.