Water → Tert-butyl 8-(2-chlorofuro[3,2-d]pyrimidin-4-yl)-2,8-diazaspiro[4.5]decane-2-carboxylate

関与物質

反応条件

反応手順

A mixture of tert-butyl 2,8-diazaspiro[4.5]decane-2-carboxylate (0.83 g, 3.4 mmol, Alfa Aesar), 2,4-dichlorofuro[3,2-d]pyrimidine (0.65 g, 3.4 mmol, ArkPharm) and TEA (0.96 mL, 6.9 mmol) in 1,4-dioxane (35 mL) was stirred at about 25° C. for about 12 h. Water (4 mL) and EtOAc (25 mL) were added and the layers were separated. The organic layer was concentrated under reduced pressure to give tert-butyl 8-(2-chlorofuro[3,2-d]pyrimidin-4-yl)-2,8-diazaspiro[4.5]decane-2-carboxylate (1.25 g, 55%): LC/MS (Table 2, Method f) Rt=2.12 min; MS m/z: 393 (M+H)+.

情報源と証拠