Ethylenediamine → HCID 58674351, compound

Participants

Reaction Steps

(E)-N-(4-Chloro-3-(trifluoromethyl)phenyl)-3-(3-(2-cyanopyridin-4-yloxy)phenyl)-2-methylacrylamide (500 mg, 1.09 mmol) and TEA (456 μL, 3.27 mmol) were combined and stirred in ethanol. H2S was bubbled into the solution for 2 min then the reaction mixture was sealed and allowed to stir at rt. Reaction completion was checked by LCMS and TLC. The mixture was diluted with EtOAc and washed with brine. The aqueous phase was extracted with EtOAc, and the organic solutions were combined, dried over Na2SO4, filtered, and concentrated to provide a yellow residue. The residue was redissolved in ethylene diamine (3 mL), heated to 60° C. for 5 min, and then allowed to cool to rt. The mixture was diluted with EtOAc and washed with brine. The aqueous phase was extracted with EtOAc, and the organic solutions were combined, dried over Na2SO4, filtered, and concentrated. Purification by column chromatography (SiO2, 0-10% MeOH with 1% NH4OH in DCM) provided B-12 (415 mg). LCMS, FA: Rt=1.34 min, [MH+ 501.0]. 1H NMR (400 MHz, CD3OD): δ 8.49 (d, 1H), 8.18 (d, 1H), 7.91-7.89 (dd, 1H), 7.57-7.53 (m, 3H), 7.40 (d, 1H), 7.35 (s, 1H), 7.23 (m, 1H), 7.16-7.13 (dd, 1H), 7.09-7.07 (m, 1H), 3.77 (s, 4H), and 2.16 (d, 3H).

Provenance & Evidence