Ethanamine, 2,2,2-trifluoro- → HCID 86722600, compound

Participants

Reaction Steps

To a stirred solution of 1-((tert-butoxycarbonyl)amino)cyclopropanecarboxylic acid (10.0 g, 49.7 mmol) in CH2Cl2 (80 mL) was added EDC.HCl (13.8 g, 71.8 mmol) followed by 2,2,2-trifluoroethylamine (8.21 g, 82.8 mmol) and 4-(dimethylamino)pyridine (7.31 g, 59.8 mmol). The reaction mixture was stirred at ambient temperature for 18 h, taken up in 300 mL of EtOAC, then washed with aq. 10% HCl (3×), aq. 10% K2CO3 (2×) and aq. sat. NaCl (1×). The organic phase was dried (MgSO4) and concentrated in vacuo to afford the title compound as a white solid (11.8 g, 84%): mp 166-167° C.; 1H NMR (400 MHz, DMSO-d6) rotamers δ 8.43 (s, 0.3H), 8.20 (s, 0.7H), 7.41 (s, 0.7H), 7.11 (s, 0.3H), 3.84 (dt, J=9.9, 4.9 Hz, 2H), 1.38 (d, J=11.4 Hz, 9H), 1.24 (q, J=4.3 Hz, 2H), 0.92 (q, J=4.3 Hz, 2H); 19F NMR (376 MHz, DMSO-d6) δ −70.57; 13C NMR (101 MHz, DMSO-d6) rotamers δ 172.82, 155.37, 124.64 (q, J=281 Hz), 78.29, 40.18 (q, J=34 Hz), 35.43, 34.70, 28.05, 27.84, 17.28, 16.62.

Provenance & Evidence