Hydrochloric Acid → 3-phenoxy-N-(4-(piperidin-4-ylmethyl)thiazol-2-yl)-5-(thieno[3,2-b]pyridin-7-ylthio)pyridin-2-amine dihydrochloride

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Reaction Steps

Added 4N HCl in dioxane (3.0 mL, 12.0 mmol) to a solution of tert-butyl 4-((2-(3-phenoxy-5-(thieno[3,2-b]pyridin-7-ylthio)pyridin-2-ylamino)thiazol-4-yl)methyl)piperidine-1-carboxylate (0.790 g, 1.25 mmol) in dichloromethane (4 mL) and methanol (4 mL). The reaction was stirred at ambient temperature for 3 hours. Concentrated, triturated with hexanes, filtered to afford the title compound (0.745 g, 98.5% yield) as a light yellow powder: 1H NMR (d6-DMSO) δ 9.13 (m, 1H), 8.89 (m, 1H), 8.67 (d, 1H), 8.51 (d, 1H), 8.47 (s, 1H), 7.80 (d, 1H), 7.57 (s, 1H), 7.42 (t, 2H), 7.16-7.23 (m, 4H), 6.91 (s, 1H), 3.21 (m, 2H), 2.80 (m, 2H), 2.60 (d, 2H), 1.95 (m, 1H), 1.76 (m, 2H), 1.45 (m, 2H).

Provenance & Evidence