反应详情

A mixture of 7-methoxy-benzofuran-3 (2H)-one (1.64 g, 10 mmol) and 1-triphenylphosphoranylidene-2-propanone (4.77 g, 15 mmol) was refluxed in toluene (100 ml) for 48 hrs. At the end, the reaction mixture was concentrated and loaded over a silica-gel column. The column was eluted with hexane (500 ml) and later with 25% ethyl acetate. The product, 1-(7-methoxy-1-benzofuran-3-yl)acetone, was obtained as a red oil. Yield: 1.4 g (68%); 205 (M+H).

1. concentrationAt the end, the reaction mixture was concentrated
2. washThe column was eluted with hexane (500 ml) and later with 25% ethyl acetate