Ethylenediamine → HCID 22346473, compound

Participants

Reaction Steps

A solution of 5-bromo-N-(4-fluorobenzyl)-8-hydroxy-1,6-naphthyridine-7-carboxamide (0.21 g, 0.55 mmol), ethylene diamine (0.14 mL, 1.67 mmol) and diisopropylethylamine (0.29 mL, 1.67 mmol) in DMPU (2.0 mL) were heated at 140 C for 16 hr. Ethylene diamine (0.14 mL, 1.67 mmol) was added and the reaction heated at 140 C for a further 24 hr. The reaction was cooled to room temperature, and treated with carbonyldiimidazole (0.188 g 1.16 mmol) and diisopropylethylamine (0.29 mL, 1.67 mmol) and then heated at 120 C for 1 hr. The reaction was cooled to room temperature, acidified by the addition of TFA (0.5 mL) and purified by reverse phase HPLC. (Waters PrePak 500 cartridge C18, Gradient elution with Water:Acetonitrile 95:5 to 5:95 with 0.1% TFA at 75 mL/min over 45 mins). Lyophilization of the pure fractions afforded the title compound as an off white solid.

Provenance & Evidence