Hydrochloric Acid → HCID 9800314, compound

Participants

Reaction Steps

Concentrated hydrochloric acid (4.9 mL) was added to a solution of 4-phenylpiperidine (9.38 g, 58.2 mmol) in isopropanol (60 mL) at 10-15° C. followed by the sequential addition of 6-methoxy-1-tetralone (9.76 g, 55.4 mmol), 37% aqueous formaldehyde (5.72 g) and 60 mL isopropanol. The mixture was refluxed for 1 hour, diluted with toluene, concentrated and the residue recrystallized sequentially from acetone and ethanol to afford the title compound as a white solid (5 g), mp 177-8° C.

Provenance & Evidence