2,4'-Difluorobenzophenone → Flutrimazole carbinol
反応式
[C:1]1([Mg]Br)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[F:9][C:10]1[CH:24]=[CH:23][CH:22]=[CH:21][C:11]=1[C:12]([C:14]1[CH:19]=[CH:18][C:17]([F:20])=[CH:16][CH:15]=1)=[O:13]>C(OC)(C)(C)C>[F:9][C:10]1[CH:24]=[CH:23][CH:22]=[CH:21][C:11]=1[C:12]([C:14]1[CH:19]=[CH:18][C:17]([F:20])=[CH:16][CH:15]=1)([C:1]1[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1)[OH:13]参加物
4
実験手順
Phenylmagnesium bromide (1.83 mL, 5.5 mmol) was added dropwise to a tirring solution of 2,4′-difluorobenzophenone (1.09 g, 5.0 mmol) in t-butylmethyl ether (12 mL) at room temperature (“rt,”˜25° C.). After the addition was complete the reaction was heated at reflux for 3 h. The solution was cooled to rt and was poured in to ice cold 1.0 M HCl (aq) (20 mL). The organics were extracted with EtOAc (3×10 mL) and dried (Na2SO4). Concentration under reduced pressure gave the desired product (2-fluorophenyl)-(4-fluorophenyl)phenylmethanol as a pale brown oil which was used in the next reaction without any further purification.