Diethyl (cyanomethyl)phosphonate → 3-{3-[5-Isopropyl-2,6-bis-(4-methoxy-benzyloxy)-pyrimidine-4-carbonyl]-phenyl}-acrylonitrile

HRID 426194Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 426194
[CH:1]([C:4]1[C:5]([C:30]([C:32]2[CH:33]=[C:34]([CH:37]=[CH:38][CH:39]=2)[CH:35]=O)=[O:31])=[N:6][C:7]([O:20][CH2:21][C:22]2[CH:27]=[CH:26][C:25]([O:28][CH3:29])=[CH:24][CH:23]=2)=[N:8][C:9]=1[O:10][CH2:11][C:12]1[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][CH:13]=1)([CH3:3])[CH3:2].[C:40]([CH2:42]P(=O)(OCC)OCC)#[N:41].CC(C)([O-])C.[K+]>C1COCC1>[CH:1]([C:4]1[C:5]([C:30]([C:32]2[CH:33]=[C:34]([CH:35]=[CH:42][C:40]#[N:41])[CH:37]=[CH:38][CH:39]=2)=[O:31])=[N:6][C:7]([O:20][CH2:21][C:22]2[CH:27]=[CH:26][C:25]([O:28][CH3:29])=[CH:24][CH:23]=2)=[N:8][C:9]=1[O:10][CH2:11][C:12]1[CH:17]=[CH:16][C:15]([O:18][CH3:19])=[CH:14][CH:13]=1)([CH3:3])[CH3:2]

Komponenten

5

Edukt 3

HCID 75676Diethyl (cyanomethyl)phosphonateHCID 23665647Potassium tert-butoxideHCID 591848203-[5-Isopropyl-2,6-bis-(4-methoxy-benzyloxy)-pyrimidine-4-carbonyl]-benzaldehyde

Produkt 1

HCID 667055543-{3-[5-Isopropyl-2,6-bis-(4-methoxy-benzyloxy)-pyrimidine-4-carbonyl]-phenyl}-acrylonitrileAusbeute 82,5 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

To a stirred mixture of 3-[5-isopropyl-2,6-bis-(4-methoxy-benzyloxy)-pyrimidine-4-carbonyl]-benzaldehyde (1.73 g, 3.22 mmol) and diethyl cyanomethylphosphonate (0.52 ml, 3.22 mmol) in anhydrous THF (10 ml) at 0° C. (ice bath) under nitrogen atmosphere, was added potassium t-butoxide (397 mg, 3.54 mmol). After 1 hr., the mixture was stirred for overnight at room temperature. The mixture was then partitioned between ether and water. The ether layer was taken, dried with anhydrous magnesium sulfate, filtered, and evaporated in vacuo to give a pale yellow syrup. The crude product was purified by silica gel column chromatography (eluent, EA:hexanes (2:7)) to afford 1.46 g (81%) of a pale yellow syrup. 1H NMR (200 MHz, CDCl3) δ 1.19 (6H, d, J=7.0 Hz), 2.86 (1H, m), 3.82 (3H, s), 3.85 (3H, s), 5.31 (2H, s), 5.46 (2H, s), 5.93 (1H, d J=16.8 Hz), 6.81-6.97 (4H, m), 7.28-7.93 (8H, m).

Aufarbeitung

  1. customThe mixture was then partitioned between ether and water
  2. dry with materialdried with anhydrous magnesium sulfate
  3. filtrationfiltered
  4. customevaporated in vacuo
  5. customto give a pale yellow syrup
  6. customThe crude product was purified by silica gel column chromatography (eluent, EA:hexanes (2:7))

Quellen und Nachweise

ORD-Eintrag
ord-f266da35b36642dd8ea92c417cf9ff4e
Quelldatensatz
uspto-grants-2012_01
Patentnummer
US08106064B2

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