Potassium Carbonate → 8-[2-cyano-7-(2-cyclohexyl-ethyl)-7H-pyrrolo[2,3-d]pyrimidin-6-ylmethyl]-2,8-diaza-spiro[4.5]decane-2-carboxylic acid tert-butyl ester

Beteiligte Stoffe

Reaktionsschritte

To a solution of 6-bromomethyl-7-(2-cyclohexyl-ethyl)-7H-pyrrolo[2,3-d]pyrimidine-2-carbonitrile (290 mg, 0.84 mmol) in DMF (1.7 ml), 2,8-Diaza-spiro[4.5]decane-2-carboxylic acid tert-butyl ester (201 mg, 0.84 mmol) and potassium carbonate (138 mg, 1.0 mmol) are added. The mixture is stirred at room temperature under nitrogen atomosphere for 14 h. The reaction mixture is diluted with water and extracted with AcOEt (twice). The combined organic layer is washed with water and brine, dried over MgSO4, and concentrated in vacuo. The residue is purified by silica gel column chromatography (n-hexane:AcOEt=1:1) to give 8-[2-Cyano-7-(2-cyclohexyl-ethyl)-7H-pyrrolo[2,3-d]pyrimidin-6-ylmethyl]-2,8-diaza-spiro[4.5]decane-2-carboxylic acid tert-butyl ester in 71% yield. Rf=0.45(n-hexane:AcOEt=1:1).

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