High pressure mechanistic diagnosis in Baeyer–Villiger oxidation of aliphatic ketones

The pressure effect is examined in Baeyer–Villiger oxidation of aliphatic ketones. This effect is small, reflected in slightly negative activation volumes (−2 to −8 cm3 mol−1). These values allow the picturing of the volume profile. They refer to a late transition step and give support for a rate-determining migration step experiencing full concertedness.