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DOI: 10.1055/s-0029-1219922
Room-Temperature Copper-Catalyzed Synthesis of Primary Arylamines from Aryl Halides and Aqueous Ammonia
Publikationsverlauf
Publikationsdatum:
06. Mai 2010 (online)
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Abstract
Primary arylamines can be prepared via a copper-catalyzed cross-coupling between aryl halides and aqueous ammonia using K3PO4 as a base and DMF as a solvent at room temperature.
Key words
copper - catalysis - cross-coupling - room temperature - aqueous ammonia - primary arylamine
- Supporting Information for this article is available online:
- Supporting Information
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References and Notes
Coupling of Aryl
Halides with Aqueous Ammonia at Room Temperature - General
Procedure
An oven-dried Schlenk tube was charged with
CuI (18 mg, 10 mol%), K3PO4 (424
mg, 2.0 mmol), and aryl halide
(1.0 mmol). The tube was
evacuated and backfilled with nitrogen. Then, aq NH3 (6.5
mmol, 0.5 mL) and DMF (1.0 mL) were added under nitrogen. The tube
was sealed, and the reaction mixture was stirred at r.t. for 36-48
h. The reaction mixture was quenched with H2O, extracted
with Et2O, and dried over anhyd MgSO4. The
solvents were removed under vacuum, and the residue was purified
by column chromatography (silica gel, EtOAc-PE) to afford the
product.