Citation:Byrne, P. A., Rajendran, K. V., Muldoon, J. and Gilheany, D. G. (2012) 'A convenient and mild chromatography-free method for the purification of the products of Wittig and Appel reactions', Organic & Biomolecular Chemistry, 10(17), pp. 3531-3537. doi: 10.1039/C2OB07074J
A mild method for the facile removal of phosphine oxide from the crude products of Wittig and Appel reactions is described. Work-up with oxalyl chloride to generate insoluble chlorophosphonium salt (CPS) yields phosphorus-free products for a wide variety of these reactions. The CPS product can be further converted into phosphine.
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