HCID 59293415, compound → HCID 59293407, compound

Participants

Reaction Steps

(E)-1-(1-(2,2-dimethoxyethyl)-1H-indazol-5-yl)-4-styrylpyridin-2(1H)-one (2.08 g, 5.19 mmol) was stirred in CH3OH (100 mL) for 2 h under nitrogen atmosphere. Palladium on carbon (3.1 g) was added under nitrogen atmosphere, and the mixture was stirred for 20 min. The nitrogen line was then replaced with a H2 balloon and the reaction mixture was stirred under an H2 atmosphere at room temperature for 2 h and then flushed with nitrogen (10 min). The mixture was filtered through a layer of Celite, and the filtrate was concentrated. The residue was triturated with MeOH and concentrated to gave the title compound (1.77 g, 84%) as a orange solid 1H NMR (300 MHz, CDCl3) 8.04 (s, 1H), 7.68 (d, J=15 Hz, 1H), 7.57 (d, J=9.0 Hz, 1H), 7.44-7.36 (dd, J=8.9, 1.9 Hz, 1H), 7.36-7.28 (m, 2H, overlapping with solvent peak), 7.26-7.18 (m, 3H), 6.51 (s, 1H), 6.16-6.06 (dd, J=7.0, 1.8 Hz, 1H), 4.76 (t, J=5.3 Hz, 2H), 4.48 (t, J=5.3 Hz, 2H), 3.36 (s, 6H) 3.01-2.90 (m, 2H), 2.90-2.76 (m, 2H).

Provenance & Evidence