1,2-Bis(dichlorophosphino)ethane is an organophosphorus compound with the formula (CH2PCl2)2. This colorless liquid is a precursor to chelating diphosphines.
Synthesis and reactions
It is prepared by the reaction of ethylene, white phosphorus, and phosphorus trichloride:[1]
- 3 C2H4 + 0.5 P4 + 4 PCl3 → 3 (CH2PCl2)2
The compound reacts with Grignard reagents and secondary amines to give chelating ligands.[2] An often practiced use of this compound is the synthesis of 1,2-bis(dimethylphosphino)ethane.
Related compounds
References
- ^ Burt, Roger J.; Chatt, Joseph; Hussain, Wasif; Leigh, G.Jeffery (1979). "A convenient synthesis of 1,2-bis(dichlorophosphino)ethane, 1,2-bis(dimethylphosphino)ethane and 1,2-bis(diethylphosphino)ethane". Journal of Organometallic Chemistry. 182 (2): 203–206. doi:10.1016/S0022-328X(00)94383-3.
- ^ Moloy, Kenneth G.; Petersen, Jeffrey L. (1995). "N-Pyrrolyl Phosphines: An Unexploited Class of Phosphine Ligands with Exceptional .pi.-Acceptor Character". Journal of the American Chemical Society. 117 (29): 7696–7710. doi:10.1021/ja00134a014.
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