tert-butyl(3aR,4S,6aS)-2-benzyloctahydrocyclopenta[c]pyrrol-4-ylcarbamate → tert-Butyl ((1S,5R,6S)-3-azabicyclo[3.3.0]octan-6-yl)carbamate

Participants

Reaction Steps

tert-Butyl(3aR,4S,6aS)-2-benzyloctahydrocyclopenta[c]pyrrol-4-ylcarbamate (1.06 g, 3.35 mmol) from Step A and ethanol (20 mL) were added to 20% Pd(OH)2 on carbon, wet (212.0 mg, 1.51 mmol) in a 250 mL stainless steel pressure bottle. The reaction mixture was stirred for 16 hours under 30 psi hydrogen at room temperature. The mixture was filtered through a nylon membrane and the solvent was removed in vacuo to give tert-butyl(3aR,4S,6aS)-octahydrocyclopenta[c]pyrrol-4-ylcarbamate: 1H NMR (500 MHz, pyridine-d5) δ ppm 4.02-3.99 (m, 1H), 3.03 (d, J=10.4, 1H), 2.98-2.89 (m, 1H), 2.84 (dd, J=10.1, 6.4, 1H), 2.61-2.50 (m, 3H), 2.06-1.98 (m, 1H), 1.91 (td, J=12.9, 6.7, 1H), 1.63 (dt, J=19.5, 7.6, 1H), 1.53 (s, 9H), 1.29-1.23 (m, 1H); MS (ESI+) m/z 227 (M+H)+.

Provenance & Evidence