反应详情

Ethyl-2-(2,4-dimethoxyphenyl)propenoate (22.8 g--from step (b) above) was taken up in ethanol (300 ml) and hydrogenated at atmospheric pressure and room temperature with platinum oxide (0.6 g). The catalyst was removed by filtration (using `Hyflo` supercel), the ethanol evaporated in vacuo and the residue distilled affording the title compound: 12.64 g, bp 110°-5° C./0.25 mm

1. customThe catalyst was removed by filtration (
2. customevaporated in vacuo
3. distillationthe residue distilled