Sodium hydride → Flufenprox

反応式

[H-].[Na+].[CH2:3]([O:5][C:6]1[CH:11]=[CH:10][C:9]([CH:12]([C:15]([F:18])([F:17])[F:16])[CH2:13][OH:14])=[CH:8][CH:7]=1)[CH3:4].[Cl:19][C:20]1[CH:34]=[CH:33][C:23]([O:24][C:25]2[CH:26]=[C:27]([CH:30]=[CH:31][CH:32]=2)[CH2:28]Br)=[CH:22][CH:21]=1>C1COCC1>[Cl:19][C:20]1[CH:34]=[CH:33][C:23]([O:24][C:25]2[CH:26]=[C:27]([CH:30]=[CH:31][CH:32]=2)[CH2:28][O:14][CH2:13][CH:12]([C:9]2[CH:8]=[CH:7][C:6]([O:5][CH2:3][CH3:4])=[CH:11][CH:10]=2)[C:15]([F:16])([F:17])[F:18])=[CH:22][CH:21]=1

参加物

実験手順

Under a nitrogen atmosphere, 171 mg of sodium hydride (60% oil dispersion) was added to 20 ml of dry THF. A solution of 1.0 g of 2-(4-ethoxyphenyl)-3,3,3-trifluoropropanol and 1.25 g of 3-(4-chlorophenoxy)-benzyl bromide in 30 ml of dry THF was then added with ice-cooling, and the reaction solution was stirred with ice-cooling for 1 hour and at room temperature for 12 hours. Thereafter, the reaction mixture was poured into dilute HCl-ice water and extracted twice with diethyl ether. The ether layers were combined, washed with saturated sodium chloride solution and dried over anhydrous magnesium sulfate. The solvent was removed under a reduced pressure, and the residue was subjected to column chromatography on silica gel [eluted with n-hexane/ethyl acetate (50:1) mixture] to obtain 1.22 of the desired compound.