Ethyl 4-(dibenzylamino)-2-ethylcyclopentanecarboxylate → Ethyl 4-amino-2-ethylcyclopentanecarboxylate

HRID 2204577Notes

Reaction equation

C([N:8](CC1C=CC=CC=1)[CH:9]1[CH2:13][CH:12]([C:14]([O:16][CH2:17][CH3:18])=[O:15])[CH:11]([CH2:19][CH3:20])[CH2:10]1)C1C=CC=CC=1>CCO>[NH2:8][CH:9]1[CH2:13][CH:12]([C:14]([O:16][CH2:17][CH3:18])=[O:15])[CH:11]([CH2:19][CH3:20])[CH2:10]1

Participants

Conditions

Temperature: 50 °C

Procedure

To a vessel containing a slurry of 20% wet Pd(OH)2—C (12.9 g, 92.0 mmol) in EtOH (1.0 L) was added ethyl 4-(dibenzylamino)-2-ethylcyclopentanecarboxylate (129 g, 352 mmol). The reaction was shaken for about 90 min at about 50° C. at about 30 psi of H2. The resulting mixture was filtered through a nylon membrane and the filtrate was concentrated under reduced pressure to give ethyl 4-amino-2-ethylcyclopentanecarboxylate (64.5 g, 99%) as a yellow syrup: 1H NMR (CDCl3) δ 4.03-3.88 (m, 2H), 3.17 (m, 1H), 2.68 (m, 1H), 2.09-2.02 (m, 2H), 2.02-1.94 (m, 2H), 1.84 (m, 1H), 1.58-1.48 (m, 1H), 1.32-1.18 (m, 1H), 1.09 (m, 3H), 1.03 (m, 2H), 0.78-0.69 (m, 3H).

Workup

filtrationThe resulting mixture was filtered through a nylon membrane
concentrationthe filtrate was concentrated under reduced pressure

Sources & evidence

ORD record: ord-ae73e742f9e94c78baa37c29b4ba3615
Source dataset: uspto-grants-2016_06
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09365579B2

Reaction notes

Loading…