反应详情

(E)-4-(3-Bromo-4-cyclohexyl-phenyl)-3-pentene-2-one was prepared analogous to Example 52, from 3'-bromo-4'-cyclohexylacetophenone (b.p. 135°-138°C at 0.15 mm Hg; nD20 = 1.5740) an ethyl (E)-3-ethoxy-crotonate with a yield of 69% of theory. B.p. 170°-175°C at 0.3 mm Hg; m.p. 52°-53°C (from methanol).