alpha-Chlorohydrin, (+)- → 3-[4-((S)-2,3-dihydroxy-propoxy)-3,5-dimethyl-phenyl]-1-(5-ethyl-4-phenyl-thiophen-2-yl)-propan-1-one

HRID 552279Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 552279
[OH:1][C:2]1[C:7]([CH3:8])=[CH:6][C:5]([CH2:9][CH2:10][C:11]([C:13]2[S:14][C:15]([CH2:24][CH3:25])=[C:16]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[CH:17]=2)=[O:12])=[CH:4][C:3]=1[CH3:26].Cl[CH2:28][C@@H:29]([OH:32])[CH2:30][OH:31]>CC(O)C.[OH-].[Na+].O>[OH:32][C@@H:29]([CH2:30][OH:31])[CH2:28][O:1][C:2]1[C:7]([CH3:8])=[CH:6][C:5]([CH2:9][CH2:10][C:11]([C:13]2[S:14][C:15]([CH2:24][CH3:25])=[C:16]([C:18]3[CH:23]=[CH:22][CH:21]=[CH:20][CH:19]=3)[CH:17]=2)=[O:12])=[CH:4][C:3]=1[CH3:26]

Komponenten

6

Edukt 2

HCID 148904alpha-Chlorohydrin, (+)-HCID 592489883-(4-Hydroxy-3,5-dimethyl-phenyl)-1-(5-ethyl-4-phenyl-thiophen-2-yl)-propan-1-one

Produkt 1

HCID 119833063-[4-((S)-2,3-dihydroxy-propoxy)-3,5-dimethyl-phenyl]-1-(5-ethyl-4-phenyl-thiophen-2-yl)-propan-1-oneAusbeute 22,3 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 962WaterLösungsmittelHCID 3776IsopropanolLösungsmittelHCID 14798Sodium HydroxideLösungsmittel

Reaktionsbedingungen

Temperatur
70 °C

Versuchsvorschrift

A solution of 3-(4-hydroxy-3,5-dimethyl-phenyl)-1-(5-ethyl-4-phenyl-thiophen-2-yl)-propan-1-one (52 mg, 0.143 mmol) in 2-propanol (1 mL) and 3 N aq. NaOH (0.3 mL) is treated with (S)-3-chloro-propane-1,2-diol (79 mg, 0.71 mmol) and the mixture is stirred at 70° C. for 15 h. The reaction mixture is diluted with water and extracted with DCM. The solvent of the organic extract is evaporated and the crude product is purified on prep. TLC plates with heptane:EA 1:3 to give 3-[4-((S)-2,3-dihydroxy-propoxy)-3,5-dimethyl-phenyl]-1-(5-ethyl-4-phenyl-thiophen-2-yl)-propan-1-one (14 mg) as a colourless resin; LC-MS: tR=1.03 min, [M+1]+=439.25; 1H NMR (CDCl3): δ 7.58 (s, 1H), 7.45-7.30 (m, 5H), 6.88 (s, 2H), 4.11-4.04 (m, 1H), 3.87-3.80 (m, 4H), 3.67-3.60 (m, 2H), 3.60-3.56 (m, 1H), 3.48-3.40 (m, 1H), 3.20-3.10 (m, 2H), 2.98-2.87 (m, 4H), 2.25 (s, 6H), 1.30 (t, J=7.6 Hz, 3H).

Aufarbeitung

  1. extractionextracted with DCM
  2. extractionThe solvent of the organic extract
  3. customis evaporated
  4. customthe crude product is purified on prep

Quellen und Nachweise

ORD-Eintrag
ord-69a4eec1210141f2bf8353cbba6745f1
Quelldatensatz
uspto-grants-2011_05
Patentnummer
US07951794B2

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