2,6-Lutidine → (1R)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-tetrahydro-2H-pyran-4-ylethanol

HRID 549158

반응식

HRID 549158 반응식
[O:1]1[CH2:6][CH2:5][CH:4]([C@@H:7]([OH:10])[CH2:8][OH:9])[CH2:3][CH2:2]1.N1C(C)=CC=CC=1C.[Si:19](Cl)([C:22]([CH3:25])([CH3:24])[CH3:23])([CH3:21])[CH3:20].[NH4+].[Cl-]>C(Cl)Cl>[Si:19]([O:9][CH2:8][C@@H:7]([CH:4]1[CH2:5][CH2:6][O:1][CH2:2][CH2:3]1)[OH:10])([C:22]([CH3:25])([CH3:24])[CH3:23])([CH3:21])[CH3:20]

참가 물질

6

반응물 4

HCID 79372,6-LutidineHCID 25517Ammonium ChlorideHCID 28928tert-Butyldimethylsilyl chlorideHCID 67156576(R)-1-(Tetrahydro-2H-pyran-4-yl)ethane-1,2-diol

생성물 1

HCID 67157049(1R)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-tetrahydro-2H-pyran-4-ylethanol수율 78%

시약·촉매·용매 1

HCID 6344Dichloromethane용매

실험 절차

A solution of (1R)-1-tetrahydro-2H-pyran-4-ylethane-1,2-diol (2.40 g, 16.2 mmol) in 60 mL of CH2Cl2 was cooled to 0° C. under N2. 2,6-Lutidine (3.77 mL, 32.4 mmol) and tert-butyldimethylsilyl chloride (2.57 g, 17.0 mmol) were added and the reaction mixture was stirred and allowed to warm to ambient temperature overnight. The reaction mixture was treated with saturated aqueous NH4Cl solution and the layers were separated. The organic portion was washed successively with aqueous 3.5% NaH2PO4 solution (2×), H2O and brine, dried over Na2SO4, filtered and concentrated under reduced pressure. Chromatography (SiO2, 20% ethyl acetate/hexanes) gave 3.29 g of (1R)-2-{[tert-butyl(dimethyl)silyl]oxy}-1-tetrahydro-2H-pyran-4-ylethanol as a colorless oil.

후처리

  1. customthe layers were separated
  2. washThe organic portion was washed successively with aqueous 3.5% NaH2PO4 solution (2×), H2O and brine
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated under reduced pressure

출처 및 근거

ORD 기록
ord-6a69fa0c874c4279a75ce657164220a8
출처 데이터셋
uspto-grants-2011_05
특허 번호
US07943609B2

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