反应详情

26.9 g of 3-(4'-fluoro-4-biphenylyl)-3-methyl-5-imino-pyrazolidine are boiled for 10 minutes with 150 ml of 2 N aqueous potassium hydroxide solution and 150 ml of isopropanol and the mixture is worked up in the usual manner to give 3-(4'-fluoro-4-biphenylyl)-3-methyl-pyrazolidin-5-one, m.p. 194°-196°.