Sodium Hydroxide → 2-(5-Bromo-2-(methylthio)pyrimidin-4-yl)thiazolo[5,4-c]pyridine

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Reaction Steps

A stirred solution of 4-(5-bromo-2-(methylthio)pyrimidine-6-carboxamido)pyridin-3-yl diethylcarbamodithioate (1.99 g, 4.21 mmol) in 96% formic acid (40 mL) was heated to reflux for 4 h. After cooling to r.t. the reaction mixture was poured into ice/water (400 mL), then basified with 5 N aqueous sodium hydroxide and extracted with ethyl acetate (3×150 mL). The organic layers were combined, dried over sodium sulfate, filtered and the solvent evaporated in vacuo to yield 2-(5-bromo-2-(methylthio)pyrimidin-4-yl)thiazolo[5,4-c]pyridine (1.34 g, 94%) as a yellow amorphous solid. 1H NMR: δ (CDCl3, 400 MHz) 2.67 (s, 3 H), 8.09 (d, J=5.5 Hz, 1 H), 8.74 (d, J=5.5 Hz, 1 H), 8.86 (s, 1 H), 9.34 (s, 1 H).

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