HCID 12071330, compound → HCID 23559778, compound

Participants

Reaction Steps

A suspension of (7-methoxy-2-oxo-1,2,3,4-tetrahydro-quinolin-3-yl)-acetic acid methyl ester (5.4 g, 21.7 mmol) in 50 ml of methylene chloride at 0° C. was treated with 1.0 M BBr3—CH2Cl2 (200 ml, 200 mmol) under inert gas for 1 hour. The reaction mixture was allowed to warm to room temperature over an additional 2 hours. The volatiles were evaporated in vacuo to a brown oil which was treated with ice-cold methyl alcohol (400 ml×2) and evaporated after each treatment to a residue. The residue was refluxed with 5 ml of 12 N HCl and 100 ml of methyl alcohol for 2 hours and evaporated to a residue which was crystallized from methyl alcohol (25 ml) to give the title compound, (3.9 g) as fluffy tan needles, mp 178-179.5° C.

Provenance & Evidence