Methylthiourea → 2-(Methylamino)-4-(3-cyanophenyl)-5-carboethoxythiazole

HRID 1062670Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1062670
Br[CH:2]([C:8]([C:10]1[CH:15]=[CH:14][CH:13]=[C:12]([C:16]#[N:17])[CH:11]=1)=O)[C:3]([O:5][CH2:6][CH3:7])=[O:4].[CH3:18][NH:19][C:20]([NH2:22])=[S:21]>O1CCCC1>[CH3:18][NH:19][C:20]1[S:21][C:2]([C:3]([O:5][CH2:6][CH3:7])=[O:4])=[C:8]([C:10]2[CH:15]=[CH:14][CH:13]=[C:12]([C:16]#[N:17])[CH:11]=2)[N:22]=1

Komponenten

4

Edukt 2

HCID 2723704MethylthioureaHCID 22282470Ethyl 2-bromo-3-(3-cyanophenyl)-3-oxopropionate

Produkt 1

HCID 222824632-(Methylamino)-4-(3-cyanophenyl)-5-carboethoxythiazoleAusbeute 73 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Reaktionsbedingungen

Temperatur
65 °C

Versuchsvorschrift

To a solution of ethyl 2-bromo-3-(3-cyanophenyl)-3-oxopropionate (0.65 g, 2.2 mmol) in 20 mL of tetrahydrofuran was added N-methylthiourea (0.20 g, 2.2 mmol). The resulting mixture was stirred at 65° C. for 16 h. The reaction was allowed to cool and the solvent was evaporated in vacuo. The residue was taken up in ethyl acetate, washed with saturated aq NaHCO3 and brine, dried (MgSO4) and concentrated in vacuo to yield a solid. Trituration with hexanes/ethyl ether left the title compound as an off-white solid (0.46 g, 73%). MS (ESI) 288.3 (M+H)+.

Aufarbeitung

  1. temperatureto cool
  2. customthe solvent was evaporated in vacuo
  3. washwashed with saturated aq NaHCO3 and brine
  4. dry with materialdried (MgSO4)
  5. concentrationconcentrated in vacuo
  6. customto yield a solid

Quellen und Nachweise

ORD-Eintrag
ord-8d02aa7c04fe4e08bf4cbdbd2d5fb687
Quelldatensatz
uspto-grants-2005_11
Patentnummer
US06962935B2

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