Acetic Anhydride → 2-Chloro-3-formyl-6-methoxyphenyl acetate
반응식
[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]참가 물질
4
실험 절차
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°.
후처리
- 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
출처 및 근거
- ORD 기록
- ord-345436014aef45a3ad5d305772582ebe
- 출처 데이터셋
- uspto-grants-1995_02
- 특허 번호
- US05389653
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