| 摘要 |
Process for preparing nitriles of the formula (II): R-C.ident.N by reacting N- alkylcarboxamides (RCO-NHR1) or ammonium salts of carboxylic acids (RCOO- NH3R1+) or carboxylic acids in the presence of alkylamines or ammonium salts (RCOOH +NH2R1, RCOOH + NH3R1+), respectively, R being an arbitrarily substituted linear or branched C1-C12- alkyl radical, a C3-C12 cycloalkyl radical or an alkenyl, alkynyl or aryl or heteroaryl radical and R1 being an arbitrary substituted, linear or branched C2-C1 alkyl radical, a C3-C12 cycloalkyl radical or an alkenyl or alkynyl radical, with phosphonic anhydrides in the presence if desired of a base in an organic solvent at a temperature in the range from -30 to 180~C. The phosphonic anhydride used is in particular a 2,4,6-substituted 1,3,5,2,4,6-trioxathiaphosphinane 2,4,6- thoxide of the formula (I).
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