Patent ID: 7151174

Claim:
A process for making a compound of the formula I: wherein R 2 is selected from the group consisting of H, F, Cl, C 1-4 alkyl, C 3-4 cycloalkyl and CF 3 ; R 4 is H or Me; R 5 is H, Me or Et; R 11 is Me, Et, cyclopropyl, propyl, isopropyl, or cyclobutyl; Q is selected from the group consisting of: or a pharmaceutically acceptable salt thereof, which process comprises the step: reacting a starting compound of the formula II wherein R 2 , R 4 , R 5 and R 11 are as hereinbefore defined and wherein the group Q S is selected from the group consisting of: with an oxidizing agent comprising at least one reagent selected from the group consisting of peroxomonosulfuric acid, a salt of peroxomonosulfuric acid, peroxodisulfuric acid and a salt of peroxodisulfuric acid, in the presence of at least one ketone.