Formaldehyde → HCID 66838557, compound

Participants

Reaction Conditions

Reaction Steps

N-(3,4-Dichlorophenyl)-6-(methyloxy)-7-{[(2-piperidin-4-yl-1,3-thiazol-4-yl)methyl]oxy}quinazolin-4-amine (0.078 g, 0.15 mmol) was combined with 37% aqueous formaldehyde (0.025 mL, 0.34 mmol) in formic acid (2 mL) and the solution was heated to 95° C. for 1 h. The solvent was removed in vacuo and the residue was taken up in 10% MeOH/ethyl acetate (100 mL) and washed with saturated NaHCO3 (aq) (100 mL). The organic layer was dried (Na2SO4), filtered, and concentrated in vacuo. Trituration from MeOH and treatment of the resultant yellow solid with 4.0 M HCl/dioxane (0.050 mL) in MeOH, followed by lyophilization, provided 0.032 g (37%) of N-(3,4-dichlorophenyl)-6-(methyloxy)-7-({[2-(1-methylpiperidin-4-yl)-1,3-thiazol-4-yl]methyl}oxy)quinazolin-4-amine hydrochloride as a pale yellow solid. 1H NMR (400 MHz, d6-DMSO): 8.55 (s, 1H), 8.25 (d, 1H), 7.89 (dd, 2H), 7.76 (s, 1H), 7.63 (d, 1H), 7.41 (s, 1H), 5.30 (s, 2H), 3.96 (s, 3H), 3.52 (d, 2H), 3.29 (m, 2H), 3.08 (m, 1H), 2.79 (s, 3H), 2.29 (d, 2H), 1.95 (m, 2H); MS (EI) for C26H25N5O2SCl2: 530 (MH+).

Provenance & Evidence