HCID 18007174, compound → HCID 18007432, compound

Participants

Reaction Steps

To a suspension of l-aminomethyl-1-hydroxy-8-methoxy-1,2,3,4-tetrahydronaphthalene (2.54 g) in 10% acetic acid was added dropwise a solution of sodium nitrite (1.27 g) in water (6.4 ml) under ice-cooling. The mixture was stirred at the same temperature for 2 hours and then partitioned between ethyl acetate and water. The organic layer was separated, washed with an aqueous sodium bicarbonate solution and brine, dried over magnesium sulfate and evaporated in vacuo. The residue was purified by column chromatography on silica gel eluting with a mixture of hexane and ethyl acetate (10:1) to afford 4-methoxy-6,7,8,9-tetrahydro-5H-benzocyclohepten-6-one (1.08 g).

Provenance & Evidence