Acetic Acid → HCID 86669224, compound

Participants

Reaction Steps

To a solution of [1-acetyl-6-(4-formylphenyl)-2-methyl-1,2,3,4-tetrahydro-4-quinolinyl]formamide (for a preparation see Intermediate 48) (95 g, 0.25 mol) and piperidine (31 g, 0.3 mol) in solution in dichloroethane (2 L) were added at room temperature triacetoxysodiumborohydride (70 g, 0.33 mol) and acetic acid (33 g). After stirring 2 hours a t.l.c monitoring indicated the completion of the reaction and the mixture was poured into a saturated solution of NaHCO3. The organic phase was extracted after addition of DCM (500 mL) and washed with brine (100 mL), dried over Na2SO4, filtered and evaporated to dryness. Trituration of the residue in a mixture of DCM/hexane afforded the title compound (109 g, 95.6%) as an off white solid. LC/MS (Method E) m/z 406 [M+H]+, Rt=2.22 min;

Provenance & Evidence