Triethylamine → HCID 58237336, compound

Participants

Reaction Steps

4-(7-Amino-1-oxo-2-aza-spiro[4.5]dec-2-yl)-piperidine-1-carboxylic acid tert-butyl ester (0.20 g, 0.57 mmol), 3-fluorobenzoic acid (0.080 g, 0.56 mmol), BOP (0.252 g, 0.57 mmol), and triethylamine (0.115 g, 1.14 mmol) in methylene chloride (5.0 mL) was stirred at rt overnight. The mixture was concentrated, and the resulting residue was purified with chromatography (ethyl acetate) to afford the title compound which is a mixture of two diastereomers (cis/trans: 3/2; under LC-MS method C, the first peak with RT of 1.47 min was assigned as cis, and the second peak with RT of 1.50 min was assigned as trans.). 1H NMR (400 MHz, CDCl3) δ 8.5 (s, 0.6 H), 7.60-7.68 (m, 1H), 7.36-7.50 (m, 2H), 7.14-7.20 (m, 1H), 5.92 (d, J=6.8 Hz, 0.4 H), 4.55-4.65 (m, 0.4 H), 4.04-4.38 (m, 3.6H), 3.20-3.30 (m, 2H), 2.71-2.86 (m, 2H), 1.28-2.25 (m, 23H). ESI-MS m/z: 474 (M+H)+.

Provenance & Evidence