Sodium Hydroxide → 3-Amino-N-(2-amino-3,3,3-trifluoro-2-methylpropyl)-6-methoxy-5-(trifluoromethyl)picolinamide

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Reaction Steps

A mixture comprising 3-amino-6-methoxy-N-(3,3,3-trifluoro-2-(4-methoxybenzylamino)-2-methylpropyl)-5-(trifluoromethyl)picolinamide (Ex. 18) (0.9 g, 1.873 mmol) in TFA (50 ml) was heated to 50° C. for 2 h. After cooling to RT, the pH was adjusted to pH 12 using 2M NaOH. The product was extracted with DCM and the organic extract was washed with water, dried over MgSO4 and concentrated in vacuo. The crude product was loaded onto a SCX-2 cartridge eluting with MeOH followed by 2M NH3 in MeOH. The methanolic ammonia fractions were concentrated in vacuo and dried under vacuum to afford the title compound. 1H NMR (400 MHz, DMSO-d6) δ 8.35 (1H, m), 7.67 (1H, s), 6.67 (2H, s), 3.93 (3H, s), 3.58 (1H, m), 3.40 (1H, m), 2.22 (2H, s), 1.14 (3H, s).

Provenance & Evidence