Thionyl Chloride → 6,7-Dihydroxy-4-oxo-4H-1-benzopyran-3-carbonyl chloride

HRID 894985노트

반응식

HRID 894985 반응식
[OH:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][C:11]=1[OH:12])[O:8][CH:7]=[C:6]([C:13](O)=[O:14])[C:5]2=[O:16].S(Cl)([Cl:19])=O>>[OH:1][C:2]1[CH:3]=[C:4]2[C:9](=[CH:10][C:11]=1[OH:12])[O:8][CH:7]=[C:6]([C:13]([Cl:19])=[O:14])[C:5]2=[O:16]

참가 물질

3

반응물 2

HCID 24386Thionyl ChlorideHCID 122007766,7-Dihydroxychromon-3-carboxylic acid

생성물 1

HCID 127657576,7-Dihydroxy-4-oxo-4H-1-benzopyran-3-carbonyl chloride

실험 절차

A mixture of 6,7-dihydroxychromone-3-carboxylic acid (888 mg, 4 mmol) and thionyl chloride (25 ml) was refluxed for one hour and the thionyl chloride was evaporated. After the addition of benzene, the mixture was evaporated again to dryness and the residue was triturated with dichloromethane to give the desired compound (719 mg).

후처리

  1. temperaturewas refluxed for one hour
  2. customthe thionyl chloride was evaporated
  3. additionAfter the addition of benzene
  4. customthe mixture was evaporated again to dryness
  5. customthe residue was triturated with dichloromethane

출처 및 근거

ORD 기록
ord-28324460acf34701b013aa657da992b0
출처 데이터셋
uspto-grants-1981_08
특허 번호
US04285940

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