Mixed anhydrides from acetylenedicarboxylic acid and differently substituted acetic acids, accessible either by an unusual photoarrangement of type 1 → 4 or by conventional means, are ideal candidates for Diels-Alder reactions.
由
乙炔二
羧酸和不同取代的
乙酸制成的混合酸酐,可通过1→4型的异常光排列或通过常规方法获得,是Diels-Alder反应的理想候选物。