1,3-Bis(diphenylphosphino)propane
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IUPAC name
Propane-1,3-diylbis(diphenylphosphane)
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Identifiers | |
6737-42-4 | |
Abbreviations | DPPP |
ChEMBL | ChEMBL73394 |
ChemSpider | 73276 |
Jmol 3D model | Interactive image Interactive image |
PubChem | 81219 |
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Properties | |
C27H26P2 | |
Molar mass | 412.45 g·mol−1 |
Appearance | white solid |
chlorocarbons | |
Vapor pressure | {{{value}}} |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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verify (what is ?) | |
Infobox references | |
1,3-Bis(diphenylphosphino)propane (dppp) is an organophosphorus compound with the formula (CH2)3(P(C6H5)2)2. The compound is a white solid that is soluble in organic solvents. It is slightly air-sensitive, degrading in air to the phosphine oxide. It is classified as a diphosphine ligand in coordination chemistry and homogeneous catalysis.
The diphosphine can be prepared by the reaction of lithium diphenylphosphide and 1,3-dichloropropane (Ph = C6H5):
- 2 Ph2PLi + C3H6Cl2 → C3H6(PPh2)2 + 2 LiCl
Coordination chemistry and use as co-catalyst
The diphosphine serves as a bidentate ligand forming six-membered C3P2M chelate ring. For example, the complex dichloro(1,3-bis(diphenylphosphino)propane)nickel is prepared by combining equimolar portions of the ligand and nickel(II) chloride hexahydrate. This nickel complex serves as a catalyst for the Kumada coupling reaction.[1] Dppp is also used as a ligand for palladium(II) catalysts to co-polymerize carbon monoxide and ethylene to give polyketones.[2] Dppp can sometimes be used in palladium-catalyzed arylation under Heck reaction conditions to control regioselectivity.[3]
References
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- ↑ Cabri, Walter; Candiani, Ilaria; Bedeschi Angelo; Penco, Sergio"α-Regioselectivity in Palladium-Catalyzed Arylation of Acyclic Enol Ethers" journal= Journal of Organic Chemistry, 1991, volume 57, p. 1481. doi:10.1021/jo00031a029