3-Methyl-1,2-dihydroisoquinolin-1-one → 3-Methyl-5,6,7,8-tetrahydro-2H-isoquinolin-1-one

Participants

Reaction Steps

8.45 g (53 mmol) of 3-methyl-2H-isoquinolin-1-one are dissolved in 80 ml of glacial acetic acid and, after addition of 168 mg (0.74 mmol) of platinum(IV) oxide, hydrogenated under 5 bar at RT for 8 h. The suspension is filtered and concentrated and the residue is recrystallized from methanol. 7.15 g (83%) of a colorless oil are obtained.

Provenance & Evidence