1-Ethyl-3-(3'-dimethylaminopropyl)carbodiimide → HCID 58869824, compound

Participants

Reaction Steps

The product from Example 1, Part E (200 mg, 0.68 mmol) was dissolved in 5 mL DMF. HOBt (312 mg, 2.04 mmol) and EDCI (340 mg, 2.04 mmol) were added and the mixture was stirred at room temperature for 0.5 h. 6-Aminonicotinic acid methyl ester (156 mg, 1.02 mmol) was added and the mixture was stirred for 16 h. The mixture was poured into 100 mL sat'd NaHCO3 and extracted with EtOAc. The combined organic phase was washed with water and brine, then dried (Na2SO4), filtered and evaporated. The product was purified by silica gel chromatography (10 mg, 3%). 1H NMR (300 MHz, acetone-d6) δ 9.64 (br s, 1H), 8.78 (s, 1H), 8.26 (s, 2H), 7.78 (d, J=7 Hz, 1H), 7.62 (m, 2H), 7.51 (m, 1H), 7.34 (m, 5H), 5.25 (d, J=15 Hz, 1H), 4.64 (m, 1H), 4.39 (d, J=15 Hz, 1H), 3.89 (s, 3H), 2.51 (m, 2H), 2.21 (m, 1H), 2.01 (m, 1H). MS: m/z (MH+) 430.

Provenance & Evidence