Sodium sulfate decahydrate → 2-Ethyl-8-methylfuro[3,2-c]pyrazolo[1,5-a]pyridine-1-methanol

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Reaction Steps

To a suspension of 80% lithium aluminum hydride (293 mg, 7.91 mmol) in tetrahydrofuran (16 mL) was added a solution of ethyl 2-ethyl-8-methylfuro[3,2-c]pyrazolo[1,5-a]pyridine-1-carboxylate (430 mg, 1.26 mmol) in tetrahydrofuran (16 mL) under ice-cooling, and the mixture was stirred at room temperature for 30 min. Sodium sulfate decahydrate (4.3 g) was added under ice-cooling, and the insoluble material was filtered off. The filtrate was concentrated under reduced pressure, and the residue was washed with diisopropyl ether to give the title compound (360 mg, yield 99%).

Provenance & Evidence