Acetic Anhydride → 2-Chloro-3-formyl-6-methoxyphenyl acetate
反応式
[Cl:1][C:2]1[C:9]([OH:10])=[C:8]([O:11][CH3:12])[CH:7]=[CH:6][C:3]=1[CH:4]=[O:5].[C:13](OC(=O)C)(=[O:15])[CH3:14]>N1C=CC=CC=1>[C:13]([O:10][C:9]1[C:8]([O:11][CH3:12])=[CH:7][CH:6]=[C:3]([CH:4]=[O:5])[C:2]=1[Cl:1])(=[O:15])[CH3:14]参加物
4
実験手順
26.0 g of 2-chloro-3-hydroxy-p-anisaldehyde are dissolved in 400 ml of acetic anhydride and 5 ml of pyridine. The solution is stirred at 80° for 8 hours, subsequently evaporated, the residue is partitioned between ice-water and methylene chloride, the organic phase is dried over sodium sulfate, evaporated and the residue is recrystallized from methylene chloride/petroleum ether. There is obtained 2-chloro-3-formyl-6-methoxyphenyl acetate of m.p. 48°-50°.
後処理
- customsubsequently evaporated
- customthe residue is partitioned between ice-water and methylene chloride
- dry with materialthe organic phase is dried over sodium sulfate
- customevaporated
- customthe residue is recrystallized from methylene chloride/petroleum ether
出典と根拠
- ORDレコード
- ord-3319d0c7314f4520b70438f5950a49f9
- 出典データセット
- uspto-grants-1993_08
- 特許番号
- US05236952
反応ノート
読み込み中…