Diethyl Ether → HCID 86663045, compound

Participants

Reaction Steps

Methyl 3-amino-6-bromo-2-(4-(isopropoxycarbonyl)phenyl)isonicotinate (1.0 g, 2.54 mmol) was dissolved in TFA (15 mL) and the yellow solution was cooled in an ice bath. Sodium nitrite (0.351 g, 5.09 mmol) was added with stirring to give a dark yellow mixture. After 30 min, sodium azide (1.65 g, 25.4 mmol) was added followed immediately by Et2O (15 mL). The light yellow mixture was stirred in the ice bath for 30 min. It was partitioned between EtOAc and sufficient sat. aq. NaHCO3 solution to neutralize the acid. The organic phase was washed with brine, dried with sodium sulfate, and the solvent removed to leave methyl 3-azido-6-bromo-2-(4-(isopropoxycarbonyl)phenyl)isonicotinate (1.0 gm, 2.3 mmole, 92% yield). 1H NMR (500 MHz, chloroform-d) δ ppm 8.13 (2H, d, J=8.24 Hz), 7.82 (2H, d, J=4.58 Hz), 7.80 (1H, s), 5.24-5.30 (1H, m), 4.01 (3H, s), 1.38 (6H, d, J=6.10 Hz).

Provenance & Evidence