[CH2:1]([P:3]([O-:9])[O:4][CH2:5][CH2:6][CH2:7][CH3:8])[CH3:2].[O-]CC.[Na+].[CH2:14](Cl)[CH:15]=[CH2:16]>C(O)C.Cl[Ni](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH2:1]([P:3]([CH:14]=[CH:15][CH3:16])(=[O:9])[O:4][CH2:5][CH2:6][CH2:7][CH3:8])[CH3:2]At room temperature, a three-neck flask equipped with stirrer and high-performance condenser is initially charged with 400 g of ethanol and this initial charge is devolatilized by stirring and passing nitrogen through it. Then, under nitrogen, 3.27 g (5 mmol) of bis(triphenylphosphine)nickel dichloride and 30 g (0.2 mol) of butyl ethylphosphonite (produced as in Example 2) are added followed by the dropwise addition of initially 14.5 g (0.25 mol) of sodium ethoxide in ethanol and thereafter 19.1 g (0.25 mol) of allyl chloride. Following a reaction time of 5 hours, the reaction solution is passed for purification through a column charged with Deloxan® THP II and the solvent is removed in vacuo. The product is purified by column chromatography to obtain 25.1 g (66% of theory) of butyl ethylpropenylphosphinate as colorless oil.
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