3-Hydroxyphenethyl alcohol → 2-(3-Hydroxyphenyl)acetaldehyde

HRID 909123

반응식

HRID 909123 반응식
OC1C=CC(CC=O)=CC=1.[OH:11][C:12]1[CH:13]=[C:14]([CH:18]=[CH:19][CH:20]=1)[CH2:15][CH2:16][OH:17].C1C=CN=CC=1.O=S(=O)=O>CS(C)=O>[OH:11][C:12]1[CH:13]=[C:14]([CH2:15][CH:16]=[O:17])[CH:18]=[CH:19][CH:20]=1

참가 물질

5

반응물 3

HCID 834043-Hydroxyphenethyl alcoholHCID 168533Sulfur trioxide-pyridineHCID 4401134-Hydroxyphenylacetaldehyde

생성물 1

HCID 149952072-(3-Hydroxyphenyl)acetaldehyde수율 22%

시약·촉매·용매 1

HCID 679Dimethyl Sulfoxide용매2회

실험 절차

3-hydroxyphenylacetaldehyde was prepared by a synthesis analogous to that of 4-hydroxyphenylacetaldehyde (Heterocycles, 2000, 53, 777-784). 3-Hydroxyphenethyl alcohol (1.0 g, 7.5 mmol, Aldrich) was dissolved in dimethylsulfoxide (8 mL, Aldrich). TEA (2.0 mL, 14 mmol, Aldrich) was added slowly with stirring. Pyridine-sulfur trioxide (SO3.py) complex (2.4 g, 15 mmol, Aldrich) was completely dissolved in dimethylsulfoxide (8 mL, Aldrich) and this solution was added drop-wise to the alcohol, with vigorous stirring. After stirring for 1 h at room temperature, the reaction was quenched with ice-cold water, then extracted with CH2Cl2. The organic layer was dried over Na2SO4, filtered, and concentrated to dryness. Purification using silica gel chromatography with hexane-ethyl acetate as eluent (3:1, then 1:1) yielded 225 mg (22%) of 3-hydroxyphenylacetaldehyde.

후처리

  1. stirringAfter stirring for 1 h at room temperature
  2. customthe reaction was quenched with ice-cold water
  3. extractionextracted with CH2Cl2
  4. dry with materialThe organic layer was dried over Na2SO4
  5. filtrationfiltered
  6. concentrationconcentrated to dryness
  7. customPurification

출처 및 근거

ORD 기록
ord-04bb83669e5044d3908baa58211c833c
출처 데이터셋
uspto-grants-2011_09
특허 번호
US08017733B2

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