2,2-Difluoropropane-1,3-diol → 1,3-Dioxane, 5,5-difluoro-2-[(phenylmethoxy)methyl]-

HRID 31670

반응식

HRID 31670 반응식
[F:1][C:2]([F:7])([CH2:5][OH:6])[CH2:3][OH:4].[CH2:8]([O:15][CH2:16][CH:17]=O)[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1>C1(C)C=CC=CC=1>[CH2:8]([O:15][CH2:16][CH:17]1[O:6][CH2:5][C:2]([F:7])([F:1])[CH2:3][O:4]1)[C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1

참가 물질

5

반응물 3

HCID 957442,2-Difluoropropane-1,3-diolHCID 108989(Phenylmethoxy)acetaldehydeHCID 521998p-Toluenesulfonic acid monohydrate

생성물 1

HCID 597924871,3-Dioxane, 5,5-difluoro-2-[(phenylmethoxy)methyl]-수율 42.8%

시약·촉매·용매 1

HCID 1140Toluene용매

실험 절차

A mixture of 2,2-difluoropropane-1,3-diol (1 g, 8.9 mmol), benzyloxyacetaldehyde (1.34 g, 8.9 mmol), p-toluenesulfonic acid monohydrate (154 mg, 0.81 mmol) and toluene (20 ml) was heated under reflux by a condenser equipped with a Dean-Stark apparatus for one hour. The resultant mixture was stirred at room temperature overnight and then the reaction mixture was concentrated under reduced pressure. The residue was dissolved in ethyl acetate and silica gel was added thereto. The resultant mixture was concentrated to dryness and subjected to silica gel column chromatography (elution solvent: n-heptane/ethyl acetate=10/1) to obtain the title compound (930 mg, 42.8%).

후처리

  1. temperaturewas heated
  2. temperatureunder reflux by a condenser
  3. customequipped with a Dean-Stark apparatus for one hour
  4. concentrationthe reaction mixture was concentrated under reduced pressure
  5. dissolutionThe residue was dissolved in ethyl acetate
  6. additionsilica gel was added
  7. concentrationThe resultant mixture was concentrated to dryness
  8. washsubjected to silica gel column chromatography (elution solvent: n-heptane/ethyl acetate=10/1)

출처 및 근거

ORD 기록
ord-97711e84e9294c079076706531e3404f
출처 데이터셋
uspto-grants-2008_09
특허 번호
US07425634B2

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