Diisopropylethylamine → HCID 178475048, compound

Participants

Reaction Steps

N-[(3R)-1-(4-aminophenyl)pyrrolidin-3-yl]acetamide mono hydrochloride (Method 43; 2.47 g, 9.67 mmol) and Hunigs base (2.02 ml, 1.16 mmol) were reacted with di-tert-butyl [(Z)-1H-pyrazol-1-ylmethylylidene]biscarbamate (2.95 g, 9.5 mmol) in THF (50 ml) at room temperature for 72 hours. After evaporation under reduced pressure, chromatography on silica gel with EtOAc/isohexane (50:50 to 100) gave the title compound as a yellow oil (3.06 g, 69%). NMR: 1.39 (s, 9H), 1.52 (s, 9H), 1.81 (s, 3H), 1.82-1.93 (m, 1H), 2.11-2.24 (m, 1H), 3.00-3.08 (m, 1H), 3.21-3.51 (m, 3H), 4.29-4.40 (m, 1H), 6.50 (d, 2H), 7.29 (d, 2H), 8.12 (d, 1H), 9.74 (s, 1H), 11.49 (s, 1H); m/z 462.

Provenance & Evidence