1,4-Dioxane hydrochloride → 5-chloro-N-((2,6-dimethyl-4-oxo-1,4-dihydropyridin-3-yl)methyl)-2-methyl-3-(piperidin-4-yloxy)benzamide

Participants

Reaction Steps

A solution of tert-butyl 4-(5-chloro-3-(((2,6-dimethyl-4-oxo-1,4-dihydropyridin-3-yl)methyl)carbamoyl)-2-methylphenoxy)piperidine-1-carboxylate (80 mg, 158 mmol) in DCM (2 mL) was treated with 4 M HCl/dioxane (2 mL). The reaction stirred for 2 h at RT, then was concentrated in vacuo and triturated with EtOAc to give 5-chloro-N-((2,6-dimethyl-4-oxo-1,4-dihydropyridin-3-yl)methyl)-2-methyl-3-(piperidin-4-yloxy)benzamide as the hydrogen chloride salt (0.050 g, 113 mmol, 72% yield). 1H NMR (400 MHz, DMSO-d6) δ 1.74-1.90 (m, 2 H) 2.07 (s, 3 H) 2.11 (d, J=4.80 Hz, 2 H) 2.57 (s, 3 H) 2.72 (s, 3 H) 3.09 (br. s., 2 H) 3.17 (s, 2 H) 4.38 (d, J=4.80 Hz, 2 H) 4.60-4.87 (m, 1 H) 6.89 (s, 1 H) 7.12 (s, 1 H) 7.23 (d, J=1.77 Hz, 1 H) 8.69 (t, J=5.05 Hz, 1 H) 8.98 (br. s., 2 H) 14.42 (br. s., 1 H). MS(ES) [M+H]+ 404.3.

Provenance & Evidence