Methanol → 4-Chloro-2-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl-phenylamine

HRID 448123

Reaktionsgleichung

[NH:1]([C:3]1[N:8]=[CH:7][CH:6]=[CH:5][N:4]=1)[NH2:2].[N+:9]([C:12]1[CH:19]=[CH:18][C:17]([Cl:20])=[CH:16][C:13]=1[CH:14]=O)([O-])=O.CO.C(O)(=O)C.C(O)(=O)C.IC1C=CC=CC=1>[NH4+].[Cl-].CCO.[Fe]>[Cl:20][C:17]1[CH:18]=[CH:19][C:12]([NH2:9])=[C:13]([C:14]2[N:4]3[CH:5]=[CH:6][CH:7]=[N:8][C:3]3=[N:1][N:2]=2)[CH:16]=1

Komponenten

Reaktionsbedingungen

Temperatur: 60 °C

Versuchsvorschrift

A 5 mL scintillation vial was charged with 2-hydrazinopyrimidine (61 mg, 0.55 mmol), 2-nitro-5-chlorobenzaldehyde (112 mg, 0.60 mmol) and MeOH (500 μL) and heated to 60° C. for 30 minutes. The MeOH was then removed in vacuo and the resultant solid was washed with Et2O. The crude solid (30 mg) was then suspended in CH2Cl2 (1 mL) and iodobenzene diacetate (39 mg, 0.12 mmol) was added. The reaction was stirred at room temperature for 30 minutes after which the solvent was removed in vacuo. The resultant residue was then dissolved in a 10% solution of saturated NH4Cl(aq) in EtOH and iron (19 mg, 0.33 mmol) was then added and the reaction was stirred at 80° C. for 4 h. The solvent was then removed in vacuo and the product was purified by silica gel chromatography to afford 4-chloro-2-[1,2,4]triazolo[4,3-a]pyrimidin-3-yl-phenylamine as a light yellow oil.

Aufarbeitung

customThe MeOH was then removed in vacuo
washthe resultant solid was washed with Et2O
customwas removed in vacuo
additionwas then added
stirringthe reaction was stirred at 80° C. for 4 h
customThe solvent was then removed in vacuo
customthe product was purified by silica gel chromatography

Quellen und Nachweise

ORD-Eintrag: ord-0b6bc742720c489698823c3cb82c3e17
Quelldatensatz: uspto-grants-2013_07
DOI: 10.6084/m9.figshare.5104873.v1
Patentnummer: US08481579B2

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