[F:1][C:2]([F:10])([F:9])[C:3]([CH3:8])([CH3:7])[C:4]([NH2:6])=O.O=P12OP3(OP(OP(O3)(O1)=O)(=O)O2)=O>>[F:1][C:2]([F:10])([F:9])[C:3]([CH3:8])([CH3:7])[C:4]#[N:6]A mixture of 3,3,3-trifluoro-2,2-dimethyl-propionamide (Stage 44.4) (121.2 mmol) and phosphorus pentoxide (121.2 mmol) was slowly heated to 200° C. and the resulting distillate collected. The title compound was obtained as a colorless liquid.
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