250275-15-1

370879-56-4

250275-15-1

General procedure for the synthesis of tert-butyl cis-tert-butyl hexahydropyrrolo[3,4-c]pyrrole-2(1H)-carboxylate from tert-butyl cis-5-benzylhexahydropyrrolo[3,4-c]pyrrole-2(1H)-carboxylate: To tert-butyl (5 g, 16.5 mmol)-5-benzylhexahydropyrrolo[3,4-c]pyrrole-2(1H)-carboxylate (5 g), 16.5 mmol ) was added to a solution of 10% Pd(OH)2/C catalyst (0.5 g) in methanol (50 mL). The reaction mixture was subjected to a hydrogen atmosphere (60 psi) and stirred at 60 °C overnight and subsequently cooled to room temperature. The reaction mixture was filtered through diatomaceous earth and the filtrate was concentrated under reduced pressure to afford tert-butyl (3R,6aS)-hexahydropyrrolo[3,4-c]pyrrole-2(1H)-carboxylate as a colorless oil (2.3 g, 66% yield).