Acetic Acid → 8-{[(6-fluoro-2,3,4,9-tetrahydro-1H-carbazol-3-yl)methyl]amino}-2,3,8,9-tetrahydropyrano[3,2-e]isoindol-1(7H)-one

Participants

Reaction Steps

To a mixture of (1) (60 mg, 0.294 mmol), 6-fluoro-2,3,4,9-tetrahydro-1H-carbazole-3-carbaldehyde ((28), 64 mg, 0.294 mmol) in acetic acid (38 mg, 0.588 mmol) and methanol (3 ml) was added NaBH3CN (37 mg, 0.588 mmol) in portions. The resulting mixture was stirred for 40 min. The solvent was removed in vacuo and the residue was dissolved in methylene chloride. The organic solution was washed with 1N NaOH and saturated NaCl before being dried over with Na2SO4. The concentration of organic solution in vacuo gave crude (27), which was purified on silica gel eluting with 80% EtOAc/Hexane to give a white solid (71 mg, 60%). MS (ES) m/z 406.2

Provenance & Evidence