Hydrochloric Acid → 92329-61-8

Participants

Reaction Steps

4-Phenyl-1,4-piperidinedicarboxylic acid 1-(1,1-dimethylethyl) ester (8-2) (202 g, 0.662 mol) was dissolved in 1700 mL of 10% HCl in methanol and rhodium on alumina (25 g) was added. The mixture was placed on a high pressure hydrogenator using 1500 psi of hydrogen at 100° C. for 17 h. The resulting mixture was filtered through Celite using methanol to rinse and concentrated. The resulting solid was triturated with diethyl ether and filtered to afford title compound 8-3 as an off-white solid.

Provenance & Evidence