Ammonium Chloride → 3-((2-(4-Methylthiazol-2-ylamino)pyridin-3-yloxy)methyl)phenol hydrochloride

Participants

Reaction Steps

A 125 mL round-bottomed flask was charged with 3-(3-(tert-butyldimethylsilyloxy)benzyloxy)-N-(4-methylthiazol-2-yl)pyridin-2-amine (5.4 g, 13 mmol) and THF (50 mL). TBAF (1M in THF, 15 mL, 15 mmol) was added and stirred at room temperature overnight. The reaction was poured into saturated aqueous NH4Cl and extracted with CH2Cl2 (2×100 mL). The organic layer was dried with sodium sulfate, filtered and concentrated in vacuo. The residue was purified over silica gel (30 to 80% EtOAc in hexanes) to afford 3-((2-(4-methylthiazol-2-ylamino)pyridin-3-yloxy)methyl)phenol hydrochloride (3.5 g, 79%) after HCl salt formation. 1H NMR (d6-DMSO) δ 9.83 (bs, 1H), 9.50 (bs, 1 h), 7.89 (dd, 1H), 7.38 (d, 1H), 7.22 (t, 1H), 6.98 (m, 2H), 6.91 (dd, 1H), 6.75 (dd, 1H), 6.62 (s, 1H), 5.22 (s, 2H), 2.29 (s, 3H). Mass spectrum (apci) m/z=314.1 (M+H-HCl).

Provenance & Evidence