HCID 70577955, compound → HCID 70579383, compound

Participants

Reaction Steps

A solution of 4-acetoxy-1'-benzylxanthene-9-spiro-4'-piperidine hydrochloride (13.5 g.) in ethanal (200 ml.) is hydrogenated using 5% w/w palladium-on-carbon catalyst, at 1 atmosphere and 25° C. The catalyst is filtered off and the solvent evaporated to dryness. The residue is crystallised from ethanol-ether to give 4-acetoxyxanthene-9-spiro-4'-piperidine hydrochloride, m.p. 162°-165° C.

Provenance & Evidence