反应详情

To a solution of 4,6-dichloro-1,3,5-triazin-2-amine (1.6 g) in isopropanol (14 mL) was added 2-benzyl 3-ethyl 2,8-diazaspiro[4.5]decane-2,3-dicarboxylate (1.28 g, 3.7 mmol) and Et3N (7 mL). The solution was heated to reflux for 72 h, then cooled to RT, and concentrated in vacuo. Purification by normal phase chromatography (CH2Cl2/MeOH=50/1) afforded 2-benzyl 3-ethyl 8-(4-amino-6-chloro-1,3,5-triazin-2-yl)-2,8-diazaspiro[4.5]decane-2,3-dicarboxylate as a colorless oil.

1. temperatureThe solution was heated
2. temperatureto reflux for 72 h
3. concentrationconcentrated in vacuo
4. customPurification by normal phase chromatography (CH2Cl2/MeOH=50/1)