Ethyl Acetate → HCID 178455224, compound

Participants

Reaction Conditions

Reaction Steps

(4-{[(tert-Butyldimethylsilyl)oxy]methyl}cyclohexyl)(7H-pyrrolo[2,3-d]pyrimidin-4-yl)methanone (9.23 g, 24.7 mmol) in methanol (200 mL) was mixed with hydrazine monohydrate (38.0 mL, 618 mmol) and then stirred at 80° C. for 3 hours. The reaction mixture was allowed to cool to room temperature and mixed with ethyl acetate, washed with water and saturated sodium chloride. The organic layer was dried over anhydrous sodium sulfate and concentrated under reduced pressure. The residue was dissolved in chloroform (240 mL) and mixed with manganese(IV) oxide (10.7 g, 124 mmol). The reaction mixture was stirred at 70° C. for 1 day. The reaction mixture was filtered, and the filtrate was concentrated under reduced pressure. The residue was purified by silica gel chromatography (hexane/ethyl acetate=3/1 (v/v)) to give 1-(cis-4-{[(tert-butyldimethylsilyl)oxy]methyl)}cyclohexyl)-7H-pyrrolo[3,2-e][1,2,3]triazolo[1,5-c]pyrimidine (Reference Synthetic Examplea 135a; pale yellow solid, 670 mg, yield 7%) in a less polar fraction and 1-(trans-4-{[(tert-butyldimethylsilyl)oxy]methyl}cyclohexyl)-7H-pyrrolo[3,2-e][1,2,3]triazolo[1,5-c]pyrimidine (Reference Synthetic Examplea 135b; pale yellow solid, 5.02 g, yield 52%) in a more polar fraction.

Provenance & Evidence