3-Methylbut-1-yne → Ethyl3-Amino-4-(3-methylbut-1-ynyl)benzoate

Beteiligte Stoffe

Reaktionsbedingungen

Reaktionsschritte

To a solution of ethyl3-amino-4-iodobenzoate (Compound 31, 6.87 g, 23.1 mmol) in triethylamine (50 ml) at 25° C. under argon then added CuI (22 mg, 1.16 mmol), Pd(PPh3)2Cl2 (82 mg, 1.16 mmol), and 3-methyl-1-butyne ( 3.18 g, 46.2 mmol). The reaction was stirred for 20 h at 25° C., filtered off brown solid, and then rinsed solid with EtOAc, organic layer was concentrated in vacuo. The residue was purified by chromatography on silica gel (0→25% EtOAc-hexanes) to yield the title compound as a yellow solid.

Herkunft & Nachweise