反应详情

A solution of 1,4-dioxa-8-azaspiro[4.5]decane (3.04 g, 2.72 mL, 21.2 mmol), 4-chloro-6-methylpyrimidine (3.00 g, 23.4 mmol) and N,N-diisopropylethylamine (4.12 g, 5.56 mL, 31.8 mmol) in dioxane (50 mL) was heated to 140° C. in the microwave for 40 minutes. The reaction mixture was concentrated, then directly purified by flash chromatography (silica gel, 70 g, 0% to 15% MeOH/NH4OH (9:1) in dichloromethane). The title compound was obtained as orange oil (4.64 g, 93%).

1. concentrationThe reaction mixture was concentrated
2. customdirectly purified by flash chromatography (silica gel, 70 g, 0% to 15% MeOH/NH4OH (9:1) in dichloromethane)