反应详情

A solution of 15.2 g (0.06 moles) 3-chloromethyl-1-(4-fluorophenyl)-pyrrolidine-2,5-dione (according to Example 1) and 10.7 g (0.066 moles) sodium iodide in acetone were refluxed for 8 hours in acetone. The precipitated sodium chloride was then filtered off, and the filtrate was concentrated, extracted with chloroform and the extract once more concentrated. The desired product was obtained in a yield of 92%. Melting point: 156° C.

1. filtrationThe precipitated sodium chloride was then filtered off
2. concentrationthe filtrate was concentrated
3. extractionextracted with chloroform
4. extractionthe extract once more
5. concentrationconcentrated