A new synthetic route for the preparation of aromatic 1,5‐diketones was developed through Ni(II)‐diphosphine‐catalyzed one‐pot reactions of various aromatic ketones with aromatic aldehydes in presence of KOH and 1,4‐dioxane in moderate yields. This protocol provides expeditious access to aromatic 1,5‐diones with a single step through cross‐aldol reaction followed by Michael 1,4‐addition and does not require expensive metal complexes as catalysts. All the synthesized catalysts and the products derived from the carbonyl compounds were fully characterized by spectroscopic and analytical data. The factors influencing the rate of reaction were discussed.

中文翻译：

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Ni（II）-二膦催化一锅合成芳族1,5-二酮

在KOH和1,4-二恶烷的存在下，通过Ni（II）-二膦催化的各种芳族酮与芳族醛的一锅反应，开发了一种制备芳族1,5-二酮的新合成路线。该方案只需一步，即可通过交叉醇醛缩合反应，然后进行迈克尔1,4加成反应，从而快速获得芳族1,5-二酮，并且不需要昂贵的金属络合物作为催化剂。通过光谱和分析数据充分表征了所有合成的催化剂和衍生自羰基化合物的产物。讨论了影响反应速率的因素。