反应详情

After weighing 14.6 g (0.05 mol) of 5-(3,4-dimethoxyphenylmethylene)-2,2-dimethyl-1,3-dioxane-4,6-dione (m.p.: 173° C.) to 50 ml of the mixture of formic acid and triethylamine prepared according to Example 1, the procedure described in Example 1 was followed.

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