Sodium Hydroxide → HCID 78322881, Verbindung

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

9-Borabicyclo[3.3.1]nonane dimer (431 mg) was added to a solution of (S)-tert-butyl (1-(4-amino-6-bromo-5-(quinolin-3-yl)-7H-pyrrolo[2,3-d]pyrimidin-7-yl)but-3-en-2-yl)carbamate (300 mg) obtained in Reference Example 1 in 1,2-dimethoxyethane (4.5 ml) under a nitrogen atmosphere at room temperature, and the mixture was stirred at 48° C. for 40 minutes. After the mixture was allowed to cool to room temperature, a 4 N sodium hydroxide aqueous solution (2.1 ml) was slowly added to the reaction mixture at room temperature, and degassed under reduced pressure. Under a nitrogen atmosphere, (tetrakistriphenylphosphine)palladium(0) (136 mg) was added thereto, and stirred at 79° C. for 5 hours. After the reaction mixture was cooled, and diluted with ethyl acetate, a saturated ammonium chloride aqueous solution was added. The insoluble matter resulting in this stage was removed by filtration, and the organic layer was separated. The resulting organic layer was dried over anhydrous sodium sulfate and filtered, and then concentrated under reduced pressure to obtain a crude product. The crude product was purified by silica gel column chromatography (developing solvent: ethyl acetate/methanol) to obtain (S)-tert-butyl (4-amino-5-(quinolin-3-yl)-6,7,8,9-tetrahydropyrimido[5,4-b]indolizin-8-yl)carbamate (0.190 g) (yield: 75%) as a light-yellow solid.

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