Triethyl phosphite → (E)-Ethyl 3-(dimethylamino)-5-(4-(methoxymethoxy)-3,5-dimethylstyryl)benzoate

HRID 2368875Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 2368875
Cl[CH2:2][C:3]1[CH:4]=[C:5]([CH:11]=[C:12]([N:14]([CH3:16])[CH3:15])[CH:13]=1)[C:6]([O:8][CH2:9][CH3:10])=[O:7].C(OP(OCC)OCC)C.C[O-].[Na+].[CH3:30][O:31][CH2:32][O:33][C:34]1[C:41]([CH3:42])=[CH:40][C:37]([CH:38]=O)=[CH:36][C:35]=1[CH3:43]>CCOC(C)=O.CCO.CN(C=O)C>[CH3:15][N:14]([CH3:16])[C:12]1[CH:11]=[C:5]([CH:4]=[C:3](/[CH:2]=[CH:38]/[C:37]2[CH:40]=[C:41]([CH3:42])[C:34]([O:33][CH2:32][O:31][CH3:30])=[C:35]([CH3:43])[CH:36]=2)[CH:13]=1)[C:6]([O:8][CH2:9][CH3:10])=[O:7]

Komponenten

8

Edukt 4

HCID 31215Triethyl phosphiteHCID 10942334Sodium MethoxideHCID 199197474-(Methoxymethoxy)-3,5-dimethylbenzaldehydeHCID 68335175Ethyl 3-(chloromethyl)-5-(dimethylamino)benzoate

Produkt 1

HCID 68335176(E)-Ethyl 3-(dimethylamino)-5-(4-(methoxymethoxy)-3,5-dimethylstyryl)benzoateAusbeute 67,1 %

Reagenzien, Katalysatoren, Lösungsmittel 3

HCID 702EthanolLösungsmittelHCID 6228DimethylformamideLösungsmittelHCID 8857Ethyl AcetateLösungsmittel

Reaktionsbedingungen

Temperatur
0 °C

Versuchsvorschrift

Compound 3 (1.224 g, 4.277 mmol) and triethylphosphite (1.512 mL, 8.555 mmol) were heated to 150° C. for 3 hours. The reaction mixture was cooled to 0° C. and then 6 mL of DMF and 6 mL of EtOH were added. NaOMe (486 mg, 8.554 mmol) and 4-(methoxymethoxy)-3,5-dimethylbenzaldehyde (0.831 g, 4.277 mmol) were added to the solution. After 18 hours, the mixture was diluted with EtOAc and the solution was washed with brine. After drying on Na2SO4, the organic layer was filtered and concentrated under reduced pressure. The residue was subjected to chromatography over silica gel (Hexanes/EtOAc=9/1) to give Compound 4 (1.10 g, 67%). 1H-NMR (500 MHz, CDCl3) δ 7.56 (s, 1H), 7.30 (m, 1H), 7.20 (s, 2H), 7.06 (d, J=16.3 Hz, 1H), 6.99 (d, J=16.3 Hz, 1H), 6.97 (s, 1H), 4.96 (s, 2H), 4.39 (q, J=7.1 Hz, 2H), 3.62 (s, 3H), 3.03 (s, 6H), 2.32 (s, 6H), 1.42 (t, J=7.1 Hz, 3H); 13C-NMR (125 MHz, CDCl3) δ 167.23, 154.65, 150.72, 138.36, 133.12, 131.48, 131.24, 128.70, 127.78, 127.07, 115.70, 114.53, 112.47, 99.11, 60.92, 57.39, 40.65, 16.99, 14.40; ESI-MS: m/z (MH+): 384.2169 (calc'd), 384.2173 (found).

Aufarbeitung

  1. washthe solution was washed with brine
  2. customAfter drying on Na2SO4
  3. filtrationthe organic layer was filtered
  4. concentrationconcentrated under reduced pressure

Quellen und Nachweise

ORD-Eintrag
ord-ef0868bad66a4a21addde9927a991964
Quelldatensatz
uspto-grants-2014_04
Patentnummer
US08703815B2

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