Br[CH2:2][C:3]([O:11][CH3:12])=[CH:4][C:5](=[O:10])[C:6]([Cl:9])([Cl:8])[Cl:7].[C:13]([O-:16])(=[O:15])[CH3:14].[Cs+].C(O)(=O)C>[Br-].C([N+](CCCC)(CCCC)CCCC)CCC.C(#N)C>[C:13]([O:16][CH2:2][C:3]([O:11][CH3:12])=[CH:4][C:5](=[O:10])[C:6]([Cl:9])([Cl:8])[Cl:7])(=[O:15])[CH3:14]29.6 g (0.1 mol) of 5-bromo-1,1,1-trichloro-4-methoxypent-3-en-2-one, 19.1 g of cesium acetate, 5 g of tetrabutylammonium bromide and 8 g of acetic acid were stirred in 300 ml of acetonitrile at 25° C. for 8 h. The precipitate was filtered off and the organic phase was concentrated under reduced pressure.
Wird geladen…