Sodium Bicarbonate → HCID 68944846, compound

Participants

Reaction Conditions

Reaction Steps

A solution of 150 mg (3aSR,10RS)-2-(2-dimethylamino-ethyl)-10-(3-hydroxy-phenyl)-6-methoxy-3a-methyl-3a,4,9,10-tetrahydro-2,9,10a-triaza-cyclopenta[b]fluorene-1,3-dione (example 7) in 5 ml dichloromethane is cooled to −78° C. 20 ml bor tribromide are added drop wise. The suspension is stirred for 30 min at −78° C. and allowed to warm up to room temperature. After stirring for 1 h at room temperature, the mixture is cooled to 0° C. and an aqueous solution of sodium bicarbonate is added. The organic layer is separated and dried with magnesium sulfate. The solvent is removed at reduced pressure. After column chromatography (silica gel, ethyl acetate, methanol, ammonia 10:0.3:0.2), 49 mg of the title compound are obtained as a colourless foam. MS: m/z (MH+)=435.2

Provenance & Evidence