ORGANIC PHOSPHORUS COMPOUNDS 90. l A CONVENIENT, ONE-STEP SYNTHESIS OF ALKYL-AND ARYLPHOSPHONYL DICHLORIDES

L Maier

Index: Maier, Ludwig Phosphorus, Sulfur and Silicon and the Related Elements, 1990 , vol. 47, p. 465 - 470

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Citation Number: 26

Abstract

Abstract N, N-Disubstituted formamides such as dimethylformamide. N-formylpyrrolidine, N- formylpiperidine etc. and also pyridine and hexamethylphosphonic acid triamide catalyze the chlorination of phosphonates with thionyl chloride to give phosphonyl dichlorides in high yield. Thus RP (O) CI2, R˭ CH3, C2H5, n-C12H25, C6H5, have been isolated in better than 90 per cent yield. The procedure is less satisfactory for the production of 2- ...