反应详情

A 250 ml single neck round bottom flask fitted with a water separator containing 20 g of 3A sieves (Linde) was charged with 100 ml of toluene, 10.25 g (0.052 mol) of 3,3-dimethyl-1,5-dioxaspiro[5.5]undecan-9-one (Aldrich Chemical Company), 17.97 g (3.04 mmol) of n-propylamine (Baker) and 18 mg (0.09 mmol) of p-toluenesulfonic acid monohydrate (Aldrich). The reaction mixture was refluxed for 24 hours and cooled, and the toluene was evaporated under reduced pressure to produce the title compound.

1. temperatureThe reaction mixture was refluxed for 24 hours
2. temperaturecooled
3. customthe toluene was evaporated under reduced pressure