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Pyridine → (+/-)-2-Acetoxy-5-(p-Toluenesulfonyloxymethyl)-Tetrahydrofuran

HRID 636877
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인쇄 미리보기

반응식

HRID 636877 반응식
[OH:1][CH:2]1[CH2:6][CH2:5][CH:4]([CH2:7][O:8][S:9]([C:12]2[CH:17]=[CH:16][C:15]([CH3:18])=[CH:14][CH:13]=2)(=[O:11])=[O:10])[O:3]1.N1C=CC=CC=1.[C:25](OC(=O)C)(=[O:27])[CH3:26]>CN(C1C=CN=CC=1)C.C(Cl)Cl>[C:25]([O:1][CH:2]1[CH2:6][CH2:5][CH:4]([CH2:7][O:8][S:9]([C:12]2[CH:13]=[CH:14][C:15]([CH3:18])=[CH:16][CH:17]=2)(=[O:11])=[O:10])[O:3]1)(=[O:27])[CH3:26]
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참가 물질

6

반응물 3

HCID 1049PyridineHCID 7918Acetic AnhydrideHCID 21255848(+/-)2-Hydroxy-5-(p-Toluenesulfonyloxymethyl)-Tetrahydrofuran

생성물 1

HCID 21255879(+/-)-2-Acetoxy-5-(p-Toluenesulfonyloxymethyl)-Tetrahydrofuran

시약·촉매·용매 2

HCID 142844-(Dimethylamino)pyridine촉매HCID 6344
Dichloromethane
용매

실험 절차

To a stirring solution of (±)2-hydroxy-5-(p-toluenesulfonyloxymethyl)-tetrahydrofuran (example 58) (4.20 g, 15.44 mmol), pyridine (2.75 mL, 33.97 mmol) and DMAP (catalytic) in methylene chloride (100 mL) at rt was added acetic anhydride (2.91 mL, 30.88 mmol). After stirring the solution for 1 h, it was washed with water (50 mL), 1 N HCl (50 mL), saturated NaHCO3 (50 mL), dried (MgSO4) and concentrated to give the title compound as a 1:1 mixture of cis and trans isomers (4.85 g, 100%).

후처리

  1. washit was washed with water (50 mL), 1 N HCl (50 mL), saturated NaHCO3 (50 mL)
  2. dry with materialdried (MgSO4)
  3. concentrationconcentrated

출처 및 근거

ORD 기록
ord-d1f2f54db704471193969fd2cb650f5c
출처 데이터셋
uspto-grants-2001_02
DOI
10.6084/m9.figshare.5104873.v1
특허 번호
US06194576B1

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