反应详情

By following the procedure described in Example 5, Step C, using as the reactants 2-bromo-2-methyl-2',3'-dichloro-4'-methoxybutyrophenone (34 g., 0.1 mole), lithium bromide (17.4 g., 0.2 mole) and DMF (200 ml.), there is obtained 2-ethylidene-2',3'-dichloro-4'- methoxypropiophenone.