Methanol → (R)-Methyl 3-methyl-2-(5-nitro-1-oxoisoquinolin-2(1H)-yl)butanoate

Participants

Reaction Steps

5-Nitro-isochromen-1-one (5 g, 0.03 mol) and D-Valine methyl ester hydrochloride (5 g, 0.03 mol) were refluxed in methanol (40 mL, 1 mol) with triethylamine (5 g, 0.05 mol) for 2 hours. The volatiles were removed via rotovapor, and the residue was purified via flash column chromatography (40 g of silica gel, 0-30% EtOAc/Hexane) to give a brown oil. MS m/z 305.2 (M+H).

Provenance & Evidence