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Propanoic acid, 2-bromo-2-methyl-, ethyl ester → 2-(3-{6-[2-(2,4-Dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-phenoxy)-2-methyl-propionic acid ethyl ester

HRID 2110678
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Druckvorschau

Reaktionsgleichung

Reaktionsgleichung von HRID 2110678
[Cl:1][C:2]1[CH:7]=[C:6]([Cl:8])[CH:5]=[CH:4][C:3]=1[CH2:9][CH2:10][NH:11][C:12]1[N:17]=[C:16]([O:18][CH3:19])[N:15]=[C:14]([C:20]2[CH:21]=[C:22]([OH:26])[CH:23]=[CH:24][CH:25]=2)[CH:13]=1.Br[C:28]([CH3:35])([CH3:34])[C:29]([O:31][CH2:32][CH3:33])=[O:30]>C(#N)C>[CH2:32]([O:31][C:29](=[O:30])[C:28]([O:26][C:22]1[CH:23]=[CH:24][CH:25]=[C:20]([C:14]2[CH:13]=[C:12]([NH:11][CH2:10][CH2:9][C:3]3[CH:4]=[CH:5][C:6]([Cl:8])=[CH:7][C:2]=3[Cl:1])[N:17]=[C:16]([O:18][CH3:19])[N:15]=2)[CH:21]=1)([CH3:35])[CH3:34])[CH3:33]
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Komponenten

4

Edukt 2

HCID 11745Propanoic acid, 2-bromo-2-methyl-, ethyl esterHCID 114948343-{6-[2-(2,4-Dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-phenol

Produkt 1

HCID 589903752-(3-{6-[2-(2,4-Dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-phenoxy)-2-methyl-propionic acid ethyl esterAusbeute 37 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Versuchsvorschrift

A mixture of 3-{6-[2-(2,4-dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-phenol [945 mg, 2.42 mmol, Example 35(i)], PS-TBD (3.38 g, 5 mmol), ethyl 2-bromoisobutyrate (888 mL, 605 mmol) and acetonitrile (20 mL) is heated to reflux and stirred for 2 hours. The heating is turned off and the mixture is stirred overnight at ambient temperature. The reaction mixture is filtered to remove the resin and the resin is washed with MeOH (20 mL) and with acetonitrile (20 mL). The combined filtrate and washings are concentrated by rotary evaporator. The residue is subjected to flash column chromatography on silica (40 g) eluting with 20 to 50% EtOAc in heptane gradient to afford 2-(3-{6-[2-(2,4-dichloro-phenyl)-ethylamino]-2-methoxy-pyrimidin-4-yl}-phenoxy)-2-methyl-propionic acid ethyl ester [450 mg, 37%, Example 42] as a solid. LCMS: RT=2.9 minutes, MS: 504 (M+H).

Aufarbeitung

  1. temperatureis heated
  2. temperatureto reflux
  3. stirringthe mixture is stirred overnight at ambient temperature
  4. filtrationThe reaction mixture is filtered
  5. customto remove the resin
  6. washthe resin is washed with MeOH (20 mL) and with acetonitrile (20 mL)
  7. concentrationThe combined filtrate and washings are concentrated by rotary evaporator
  8. washeluting with 20 to 50% EtOAc in heptane gradient

Quellen und Nachweise

ORD-Eintrag
ord-fad9936b81704f4588152e170c6e1064
Quelldatensatz
uspto-grants-2009_04
DOI
10.6084/m9.figshare.5104873.v1
Patentnummer
US07517889B2

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