What is the most likely site of nucleophilic attack on cyclohexanone?

Axial Face
of Carbonyl
Carbon

Cyclohexanone – perspective view

Equatorial
Face of
Carbonyl
Carbon

Electron density maps of molecular orbitals:

Cyclohexanone – Equatorial Face (Blue = greatest electron deficiency)

Cyclohexanone – Axial Face (Blue = greatest electron deficiency)