Sodium hydride → HCID 66674541, compound

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of methyl 2-bromo-3-cyclohexyl-1H-indole-6-carboxylate (prepared as described in published International patent application WO2004/087714) (0.2 M, 1 eq.) in DMF at RT was added NaH (60% dispersion in mineral oil, 1.75 eq). After 1 h, KI (8 mol %) and bromoacetaldehyde dimethyl acetal (2.5 eq) were added and the reaction heated at 80° C. for 17 h. After cooling to RT, the reaction was quenched by addition of aqueous HCl (1N) and extracted into EtOAc (×3). The combined organics were washed with HCl (1N), H2O and brine before being dried (Na2SO4), filtered and concentrated in vacuo. Purification by flash column chromatography (Biotage, 5-10% EtOAc/PE gradient) gave the title compound as a white solid (79%); MS (ES+) m/z 446 (M+H)+, 448 (M+H)+.

Provenance & Evidence