反应详情

5.54 g of 8-iodomethyl-1,4-dioxa-spiro[4.5]decane and 5.15 g of triphenylphosphine are dissolved in 32 ml of acetonitrile and heated at the boil under reflux for 12 hours. The mixture is stirred at room temperature for two days and then concentrated under reduced pressure to a volume of about 15 ml, and 30 ml of diethyl ether are added. With vigorous stirring in an ice-bath, a precipitate begins to form. The precipitate is filtered off with suction and dried under reduced pressure. This gives 3.86 g of (1,4-dioxa-spiro[4.5]dec-8-ylmethyl)triphenylphosphoniumiodide.

1. temperatureheated at the boil
2. temperatureunder reflux for 12 hours
3. concentrationconcentrated under reduced pressure to a volume of about 15 ml, and 30 ml of diethyl ether
4. additionare added
5. stirringWith vigorous stirring in an ice-bath
6. customto form
7. filtrationThe precipitate is filtered off with suction
8. customdried under reduced pressure