Water → HCID 66560940, compound

Participants

Reaction Steps

To a suspension of 1-(1-acetyl-2,3-dihydro-1H-indol-5-yl)-2-hydroxyethanone (0.53 g, 2.41 mmol) and malononitrile (176 mg, 2.66 mmol, 1.1 equiv) in DMF (4 mL) chilled in an ice bath was added diethylamine (380 uL, 3.63 mmol, 1.5 equiv) over a 3 minute period. The resulting mixture was stirred in the ice bath for another 20 minutes, and then the ice bath was removed. The brownish suspension was stirred at ambient temp for 2 hours. LCMS showed product formed in 75%. To the suspension was added 20 mL of water. The warm suspension was filtered. The cake was washed with water, and dried under house vacuum overnight to give 4-(1-acetyl-2,3-dihydro-1H-indol-5-yl)-2-amino-3-furancarbonitrile (360 mg) as beige solids. LC-MS (ES) m/z=268 [M+H]+.

Provenance & Evidence