Acetic Acid → HCID 58042693, compound

Participants

Reaction Steps

To 100 mg (0.27 mmol) 4-benzyloxy-1-[2-(2,3,4,5-tetrahydro-1H-3-benzazepin-7-yl)-ethyl]-1H-pyridin-2-one (preparation 23.2) in 5.0 mL THF is added 43 μL (0.53 mmol) aqueous 37% formaldehyde solution. The mixture is acidified with acetic acid and then 62 mg (0.29 mmol) sodium triacetoxy-borohydride is added. The reaction mixture is stirred 3 h at RT and is diluted with aqueous saturated NaHCO3-solution. The mixture is stirred additional 1 h at RT, the layers are separated and the aqueous phase is extracted three times with DCM/MeOH. The combined organic phase is dried over MgSO4, filtered and the solvent is evaporated to afford the product.

Provenance & Evidence