反应详情

41 ml of a 30% solution of sodium methylate in methanol are added to a solution of 31.5 g (180 mmol) N-[2-(4-hydroxy-3-methoxy-phenyl)-ethyl]-formamide in 880 ml methanol. 48.1 g (184 mmol) toluene-4-sulfonic acid pent-2-ynyl ester are added and the mixture is refluxed for 4 hours. After evaporation the residue is taken up in ethyl acetate and washed with water. After evaporation the residue is submitted to flash-chromatography and crystallisation in ether to give the N-[2-(3-methoxy-4-pent-2-ynyloxy-phenyl)-ethyl]-formamide.

1. temperaturethe mixture is refluxed for 4 hours
2. customAfter evaporation the residue
3. washwashed with water
4. customAfter evaporation the residue
5. customis submitted to flash-chromatography and crystallisation in ether