Triethylamine → 6-methyl-1H-pyrazolo[3,4-d]pyrimidine

Participants

Reaction Steps

4.464 g (approx. 24.28 mmol, purity 92%) of 4-chloro-6-methyl-1H-pyrazolo[3,4-d]pyrimidine was dissolved in 180 ml dioxane and 2.948 g (29.14 mmol) of triethylamine and 5.629 g of 20% palladium hydroxide on charcoal were added and it was hydrogenated at 3 bar hydrogen pressure and RT for 2 days. 100 ml ethyl acetate, 2.948 g (29.14 mmol) of triethylamine and 2.000 g of 20% palladium hydroxide on charcoal were added. The mixture was hydrogenated with hydrogen at 3 bar hydrogen pressure and RT for 3 h. The reaction mixture was filtered on Celite, washed with a little dioxane/ethyl acetate and the filtrate was concentrated in the rotary evaporator. 2.180 g (purity 73%, 49% of theor.) of the target compound was obtained.

Provenance & Evidence