Acetic Acid → HCID 68510097, compound

Participants

Reaction Steps

To a stirred solution of methyl 3-cyclohexyl-1-(2,2-dimethoxyethyl)-2-(2-formylphenyl)-1H-indole-6-carboxylate (0.16 M, 1 eq, from Step 2) and 2-dimethylaminoethylamine (2 eq) in THF was added glacial acetic acid to adjust the pH of the reaction to ca. pH 4. The reaction was stirred for 1 h after which the THF was removed under reduced pressure and the residue redissolved in MeOH. NaBH4 (8 eq) was added portionwise until complete conversion was observed by LC-MS analysis. The reaction was quenched by addition of sat. aq. NaHCO3 and extracted into EtOAc (×3). The combined organics were washed with H2O and brine before being dried (Na2SO4), filtered and concentrated in vacuo. The title compound was obtained as a pale yellow oil and taken on without further purification (quantitative); MS (ES+) m/z 522 (M+H)+.

Provenance & Evidence