Sodium Chloride → 4-Tetrahydropyranyloxy-2-(6-carbethoxyhexyl)cyclopent-2-en-1-one

HRID 261914노트

반응식

HRID 261914 반응식
[OH:1][CH:2]1[CH2:6][C:5](=[O:7])[C:4]([CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][C:14]([O:16][CH2:17][CH3:18])=[O:15])=[CH:3]1.[O:19]1[CH:24]=[CH:23][CH2:22][CH2:21][CH2:20]1.O.C1(C)C=CC(S(O)(=O)=O)=CC=1.[Cl-].[Na+].C(=O)(O)[O-].[Na+]>CCOCC.CO.C(Cl)Cl>[O:19]1[CH2:24][CH2:23][CH2:22][CH2:21][CH:20]1[O:1][CH:2]1[CH2:6][C:5](=[O:7])[C:4]([CH2:8][CH2:9][CH2:10][CH2:11][CH2:12][CH2:13][C:14]([O:16][CH2:17][CH3:18])=[O:15])=[CH:3]1

참가 물질

9

반응물 5

HCID 5234Sodium ChlorideHCID 80803,4-dihydro-2H-pyranHCID 516892Sodium BicarbonateHCID 521998p-Toluenesulfonic acid monohydrateHCID 98379417-(3-Hydroxy-5-oxo-1-cyclopentenyl)-heptanoic acid ethyl ester

생성물 1

HCID 131895154-Tetrahydropyranyloxy-2-(6-carbethoxyhexyl)cyclopent-2-en-1-one

시약·촉매·용매 3

HCID 887Methanol용매HCID 3283Diethyl Ether용매HCID 6344Dichloromethane용매

실험 절차

To a stirred solution of 674 mg. (2.64 mmoles) of 4-hydroxy-2-(6-carbethoxyhexyl)cyclopent-2-en-1-one (Example 29) and 2.22 g. (26.4 mmoles) of dihydropyran in 2.6 ml. of methylene chloride is added 5.0 mg. (0.026 mmoles) of p-toluenesulfonic acid monohydrate. After stirring for 20 minutes at room temperature the solution is diluted with ether and poured into saturated sodium chloride solution containing a little sodium bicarbonate. The organic phase is separated and washed with saturated sodium chloride solution. The extract is dried over magnesium sulfate, and volatile matter is evaporated at reduced pressure to give an oil, λmax.MeOH =224 mμ (7950); νmax.=1735 (ester carbonyl group), 1710 (ketone carbonyl group), and 1030 cm-1 (tetrahydropyranyloxy group).

후처리

  1. customThe organic phase is separated
  2. washwashed with saturated sodium chloride solution
  3. dry with materialThe extract is dried over magnesium sulfate, and volatile matter
  4. customis evaporated at reduced pressure
  5. customto give an oil, λmax

출처 및 근거

ORD 기록
ord-bf458724f4544bb2a3303bef3b40bf02
출처 데이터셋
uspto-grants-1979_05
특허 번호
US04152524

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