Ethyl 1-[(R)-1-Phenylethyl]hexahydropyrrolo[3,4-b]pyrrole-5(1H)-carboxylate → Ethyl hexahydropyrrolo[3,4-B]pyrrole-5(1H)-carboxylate

Participants

Reaction Conditions

Reaction Steps

5% palladium hydroxide on activated carbon (13.9 g, 50% w/w in water) was added to a pressure reactor. The product of Example A3 (as 506.8 g of a 25.9 wt % solution of ethyl 1-((R)-1-phenylethyl)hexahydropyrrolo[2,3-c]pyrrole-5(1H)-carboxylate (131.3 g) in MeOH was added, followed by a MeOH rinse (37 g). The mixture was heated to 50° C. under an atmosphere of hydrogen (40 psi) for 4 hours. The mixture was filtered through HYFLO Filter Aid (HYFLO is a registered trademark of Celite Products Company of Los Angeles, Calif.) and rinsed with 200 mL of MeOH to provide a solution containing 78.9 g of the title compound.

Provenance & Evidence