Water → 6-Thiophen-3-yl-2-(2-trimethylsilanylethoxymethyl)-4-[1-(2-trimethylsilanyl-ethoxymethyl)-1H-benzimidazol-2-yl]-2H-pyridazin-3-one

HRID 12284

Reaktionsgleichung

Reaktionsgleichung von HRID 12284
Cl[C:2]1[CH:3]=[C:4]([C:17]2[N:21]([CH2:22][O:23][CH2:24][CH2:25][Si:26]([CH3:29])([CH3:28])[CH3:27])[C:20]3[CH:30]=[CH:31][CH:32]=[CH:33][C:19]=3[N:18]=2)[C:5](=[O:16])[N:6]([CH2:8][O:9][CH2:10][CH2:11][Si:12]([CH3:15])([CH3:14])[CH3:13])[N:7]=1.[S:34]1[CH:38]=[CH:37][C:36](B(O)O)=[CH:35]1.C(=O)([O-])[O-].[K+].[K+].O>C(COC)OC>[S:34]1[CH:38]=[CH:37][C:36]([C:2]2[CH:3]=[C:4]([C:17]3[N:21]([CH2:22][O:23][CH2:24][CH2:25][Si:26]([CH3:29])([CH3:27])[CH3:28])[C:20]4[CH:30]=[CH:31][CH:32]=[CH:33][C:19]=4[N:18]=3)[C:5](=[O:16])[N:6]([CH2:8][O:9][CH2:10][CH2:11][Si:12]([CH3:13])([CH3:14])[CH3:15])[N:7]=2)=[CH:35]1

Komponenten

6

Edukt 4

HCID 962WaterHCID 11430Potassium CarbonateHCID 581760Thiophene-3-boronic acidHCID 686802706-chloro-2-(2-trimethylsilanylethoxymethyl)-4-[1-(2-trimethylsilanyl-ethoxymethyl)-1H-benzimidazol-2-yl]-2H-pyridazin-3-one

Produkt 1

HCID 686802276-Thiophen-3-yl-2-(2-trimethylsilanylethoxymethyl)-4-[1-(2-trimethylsilanyl-ethoxymethyl)-1H-benzimidazol-2-yl]-2H-pyridazin-3-one

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 80711,2-DimethoxyethaneLösungsmittel

Reaktionsbedingungen

Temperatur
85 °C

Versuchsvorschrift

44 mg of 6-chloro-2-(2-trimethylsilanylethoxymethyl)-4-[1-(2-trimethylsilanyl-ethoxymethyl)-1H-benzimidazol-2-yl]-2H-pyridazin-3-one, 14 mg of thiophene-3-boronic acid and 36 mg of potassium carbonate are dissolved 1.5 ml of a 1:2 mixture of water and dimethoxyethane, and argon is passed through the solution for degassing. Addition of 7 mg of (1,1′-bis(diphenylphosphine) -ferrocene)palladium(II) chloride-dichloromethane complex is followed by stirring at 85° C. for 4 hours. For workup, it is diluted with water and extracted several times with ethyl acetate. The combined organic phases are dried using a silica gel cartridge, and the solvent is distilled off. The crude product is purified by silica gel chromatography (n-heptane/ethyl acetate).

Aufarbeitung

  1. customfor degassing
  2. additionAddition of 7 mg of (1,1′-bis(diphenylphosphine) -ferrocene)palladium(II) chloride-dichloromethane complex
  3. additionFor workup, it is diluted with water
  4. extractionextracted several times with ethyl acetate
  5. customThe combined organic phases are dried
  6. distillationthe solvent is distilled off
  7. customThe crude product is purified by silica gel chromatography (n-heptane/ethyl acetate)

Quellen und Nachweise

ORD-Eintrag
ord-89db74143efc4aeca5ac7a1cab291567
Quelldatensatz
uspto-grants-2010_06
Patentnummer
US07727989B2

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