Potassium Iodide → 5-(5-Ethyl-2-methyl-6-oxo-1,6-dihydropyridin-3-yl)thiophene-2-carbaldehyde

HRID 1921309Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1921309
[CH2:1]([C:3]1[CH:4]=[C:5]([C:12]2[S:16][C:15]([CH:17]=[O:18])=[CH:14][CH:13]=2)[C:6]([CH3:11])=[N:7][C:8]=1[O:9]C)[CH3:2].[I-].[K+].Cl[Si](C)(C)C>C(#N)C>[CH2:1]([C:3]1[C:8](=[O:9])[NH:7][C:6]([CH3:11])=[C:5]([C:12]2[S:16][C:15]([CH:17]=[O:18])=[CH:14][CH:13]=2)[CH:4]=1)[CH3:2]

Komponenten

5

Edukt 3

HCID 4875Potassium IodideHCID 6397ChlorotrimethylsilaneHCID 115217765-(5-Ethyl-6-methoxy-2-methylpyridin-3-yl)thiophene-2-carbaldehyde

Produkt 1

HCID 588085435-(5-Ethyl-2-methyl-6-oxo-1,6-dihydropyridin-3-yl)thiophene-2-carbaldehydeAusbeute 167,3 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6342AcetonitrileLösungsmittel

Reaktionsbedingungen

Temperatur
60 °C

Versuchsvorschrift

To a mixture of 5-(5-ethyl-6-methoxy-2-methylpyridin-3-yl)thiophene-2-carbaldehyde (0.7 g, 2.9 mmol) prepared in accordance with the procedures of Step 2 as described above, potassium iodide (1.43 g, 8.6 mmol) and acetonitrile (15 mL) is added chlorotrimethylsilane (1.1 mL, 8.6 mmol) at room temperature then the reaction is heated at 60° C. for 0.5 hr. Solid product begins to form so more solvent is added to facilitate stirring. The solids are collected by filtration, washed with water, with ether and dried to afford 5-(5-ethyl-2-methyl-6-oxo-1,6-dihydropyridin-3-yl)thiophene-2-carbaldehyde (1.2 g, 61% yield). MS: m/e=248 (M+H).

Aufarbeitung

  1. customprepared in accordance with the procedures of Step 2
  2. customto form so more solvent
  3. additionis added
  4. filtrationThe solids are collected by filtration
  5. washwashed with water, with ether
  6. customdried

Quellen und Nachweise

ORD-Eintrag
ord-48245b33302c4981af23248b9263243b
Quelldatensatz
uspto-grants-2012_05
Patentnummer
US08173682B2

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