3,4-Dimethoxy-5-nitrobenzophenone → 3,4-Dihydroxy-5-nitrobenzophenone

HRID 725307노트

반응식

HRID 725307 반응식
C[O:2][C:3]1[CH:4]=[C:5]([CH:14]=[C:15]([N+:19]([O-:21])=[O:20])[C:16]=1[O:17]C)[C:6]([C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1)=[O:7]>C(O)(=O)C.Br>[OH:2][C:3]1[CH:4]=[C:5]([CH:14]=[C:15]([N+:19]([O-:21])=[O:20])[C:16]=1[OH:17])[C:6]([C:8]1[CH:9]=[CH:10][CH:11]=[CH:12][CH:13]=1)=[O:7]

참가 물질

4

반응물 1

HCID 214590553,4-Dimethoxy-5-nitrobenzophenone

생성물 1

HCID 57479693,4-Dihydroxy-5-nitrobenzophenone

시약·촉매·용매 2

HCID 176Acetic Acid용매HCID 260Hydrogen Bromide용매

실험 절차

0.5 g of 3,4-dimethoxy-5-nitrobenzophenone is stirred at 110° for 30 hours in a mixture of 4 ml of acetic acid and 4 ml of 48 percent aqueous hydrobromic acid. The reaction mixture is subsequently evaporated to dryness. The residue is taken up in methylene chloride. It is washed with water, dried over sodium sulfate and evaporated. After recrystallization from methylene chloride/hexane there is obtained 3,4-dihydroxy-5-nitrobenzophenone of m.p. 132°.

후처리

  1. customThe reaction mixture is subsequently evaporated to dryness
  2. washIt is washed with water
  3. dry with materialdried over sodium sulfate
  4. customevaporated
  5. customAfter recrystallization from methylene chloride/hexane there

출처 및 근거

ORD 기록
ord-75664b9a01dc46938fce2a00922b971c
출처 데이터셋
uspto-grants-1998_01
특허 번호
US05705703

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