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Methyl iodide → 3-[4-(3-{[tert-Butyl(dimethyl)silyl]oxy}propyl)phenyl]-2-cyano-N-cyclopropyl-N-(2,3-dichlorobenzyl)-2-methylpropanamide

HRID 561849
Notizen
Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 561849
[Si:1]([O:8][CH2:9][CH2:10][CH2:11][C:12]1[CH:17]=[CH:16][C:15]([CH2:18][CH:19]([C:35]#[N:36])[C:20]([N:22]([CH:32]2[CH2:34][CH2:33]2)[CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[C:26]([Cl:30])[C:25]=2[Cl:31])=[O:21])=[CH:14][CH:13]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[CH3:37][Si]([N-][Si](C)(C)C)(C)C.[K+].IC>C1COCC1>[Si:1]([O:8][CH2:9][CH2:10][CH2:11][C:12]1[CH:17]=[CH:16][C:15]([CH2:18][C:19]([C:35]#[N:36])([CH3:37])[C:20]([N:22]([CH:32]2[CH2:34][CH2:33]2)[CH2:23][C:24]2[CH:29]=[CH:28][CH:27]=[C:26]([Cl:30])[C:25]=2[Cl:31])=[O:21])=[CH:14][CH:13]=1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2]
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Komponenten

5

Edukt 3

HCID 6328Methyl iodideHCID 3251421Potassium bis(trimethylsilyl)amideHCID 667617693-[4-(3-{[tert-Butyl(dimethyl)silyl]oxy}propyl)phenyl]-2-cyano-N-cyclopropyl-N-(2,3-dichlorobenzyl)propanamide

Produkt 1

HCID 667608183-[4-(3-{[tert-Butyl(dimethyl)silyl]oxy}propyl)phenyl]-2-cyano-N-cyclopropyl-N-(2,3-dichlorobenzyl)-2-methylpropanamide

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028
Tetrahydrofuran
Lösungsmittel

Reaktionsbedingungen

Temperatur
-40 °C

Versuchsvorschrift

To a solution of 3-[4-(3-{[tert-butyl(dimethyl)silyl]oxy}propyl)phenyl]-2-cyano-N-cyclopropyl-N-(2,3-dichlorobenzyl)propanamide (prepared as detailed in Example 14, 1 eq.) in THF (0.1 M) was added, at −78° C., potassium bis(trimethylsilyl)amide (15% w/w toluene solution, 1 eq.). The resulting yellow suspension was stirred at −78° C. for 15 min and at −40° C. for 15 min. Iodomethane (1 eq.) was then added and the reaction mixture was slowly warmed to RT over 14 h. The reaction was quenched with sat. aq. NH4Cl and extracted with ether. The combined organic extracts were washed with H2O and brine, dried over MgSO4 and filtered. Concentration of the filtrate in vacuo afforded a pale yellow oil. Purification of the crude product thus obtained by way of column chromatography (SiO2, 10:1→1:1 (v/v) Hex:EtOAc) afforded the title compound as a colorless oil.

Aufarbeitung

  1. temperaturethe reaction mixture was slowly warmed to RT over 14 h
  2. customThe reaction was quenched with sat. aq. NH4Cl
  3. extractionextracted with ether
  4. washThe combined organic extracts were washed with H2O and brine
  5. dry with materialdried over MgSO4
  6. filtrationfiltered
  7. customConcentration of the filtrate in vacuo afforded a pale yellow oil
  8. customPurification of the crude product
  9. customthus obtained by way of column chromatography (SiO2, 10:1→1:1 (v/v) Hex:EtOAc)

Quellen und Nachweise

ORD-Eintrag
ord-bb00b46c0cf64941be0c42daf6d5f6d4
Quelldatensatz
uspto-grants-2011_11
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US08063105B2

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