Diethylamine → Methyl 3-amino-4-(2,6-dimethylphenylethynyl)-benzoate

Participants

Reaction Steps

A mixture of methyl 3-amino-4-iodobenzoate (920 mg, 3.32 mmol), 2,6-dimethylphenylacetylene (540 mg, 4.15 mmol),), bis-(triphenylphosphine) palladium (II) chloride (47 mg, 67 μmol), diethylamine (486 mg, 66 mmol), and copper (I) iodide (19 mg, 100 μmol) in DMF (10 mL) was heated at 120° C. in a microwave apparatus for 10 min. The mixture was poured into ethyl acetate and extracted six times with brine. The organic phase was dried, filtered, and the solvent was removed under reduced pressure to leave a residue that was chromatographed using a gradient of 0-30% heptane/ethyl acetate to afford methyl 3-amino-4-(2,6-dimethylphenylethynyl)-benzoate.

Provenance & Evidence