Diisopropylethylamine → HCID 86680024, compound

Participants

Reaction Steps

A solution of PyBOP (3.06 g, 5.03 mmol) and 2-bromo-5-(tert-butoxycarbonyl-amino)thiazole-4-carboxylic acid (1.63 g, 5.04 mmol) in DCM (50 mL) was stirred at room temperature for 15 min. tert-Butyl 1-(4-amino-1-methyl-1H-pyrazol-5-yl)-5-fluoroazepan-4-ylcarbamate (1.37 g, 4.20 mmol) and DIPEA (1.17 mL, 6.71 mmol) were added and the mixture stirred at room temperature for 2 days. The reaction mixture was diluted with DCM (50 mL) and washed with water (3×50 mL). The organic layers was passed through a phase separation cartridge and concentrated under reduced pressure. Purification of the residue via silica gel column chromatography (0-100% EtOAc/isohexane) gave tert-butyl 1-(4-(5-amino-2-bromothiazole-4-carboxamido)-1-methyl-1H-pyrazol-5-yl)-5-fluoroazepan-4-ylcarbamate as a pink solid (2.50 g, 94%). 1H NMR (400 MHz, CDCl3) δ 10.27 (s, 1H), 8.27 (s, 1H), 7.64 (s, 1H), 5.01 (s, 1H), 4.86-4.60 (m, 1H), 3.81-3.64 (m, 3H), 3.44-3.27 (m, 2H), 3.15-3.07 (m, 2H), 2.28-2.10 (m, 3H), 1.92-1.70 (m, 2H), 1.52 (s, 9H), 1.44 (s, 9H).

Provenance & Evidence