2-(Isopropylthio)aniline → N-(2-(isopropylthio)phenyl)-3-methyl-6-(methylthio)-1H-pyrazolo[3,4-d]pyrimidin-4-amine

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Reaction Steps

A mixture of 4-chloro-3-methyl-6-methylmercaptopyrazolo[3,4-d]pyrimidine (A-3) (1.21 g, 5.63 mmol) and 2-(isopropylthio)aniline (A-4) (1.42 g, 8.50 mmol) in isopropanol (56 mL) was stirred at reflux for 3 h. After cooling down to ambient temperature, TEA (0.78 mL, 5.66 mmol) was added to the mixture, and the solution was again heated to reflux for 0.5 h. After cooling down to ambient temperature, the mixture was filtered to give the title compound (A-5) as white solid (1.30 g, 3.77 mmol). MS-ESI (m/z): 346 (M+H)+.

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