Ethanol → 4-Fluoro-1,2-benzenediol
反応式
B(Br)(Br)Br.C[O:6][C:7]1[CH:12]=[CH:11][C:10]([F:13])=[CH:9][C:8]=1[O:14]C.C(O)C>C(Cl)Cl>[OH:6][C:7]1[CH:12]=[CH:11][C:10]([F:13])=[CH:9][C:8]=1[OH:14]参加物
5
実験手順
A 1 M solution of boron tribromide in methylene chloride (500 mL, 0.50 mole) was cooled to -78 ° C. To this solution was added in a dropwise manner a solution of 46 g (0.30 mole) of 1,2-dimethoxy-4-fluorobenzene in 100 mL of methylene chloride. Upon completion of addition, the mixture was allowed to warm to ambient temperature at which it stirred for about 16 hours. At the conclusion of this period the reaction mixture was cooled to 0° C., and ethanol was added to the reaction mixture. The solvents were evaporated under reduced pressure, leaving 40 g of 1,2-dihydroxy-4-fluorobenzene as a residue. The NMR spectrum was consistent with the proposed structure.
後処理
- additionUpon completion of addition
- temperatureAt the conclusion of this period the reaction mixture was cooled to 0° C.
- customThe solvents were evaporated under reduced pressure
出典と根拠
- ORDレコード
- ord-c5d91d7d367342f6bd1ab91b35583ba7
- 出典データセット
- uspto-grants-1994_09
- 特許番号
- US05346881
反応ノート
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