Phosphorus oxide (P4O10) → Trifluoromethanesulfonic anhydride

Participants

Reaction Steps

Triflic anhydride was prepared as follows: 170 g. (100 ml.) CF3SO3H ("Fluorochemic acid" 3M Company) and 135 g. P2O5 were mixed carefully, shaken well, and stored 18 hours protected from moisture. The product was distilled from the resulting solid mass using a flame; the fraction boiling 80°-90° C. was collected. Re-distillation of this fraction yielded 119.45 . (74%) of triflic anhydride boiling 82°-84° C.

Provenance & Evidence