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L-Proline-catalysed the synthesis of aromatic aldehydes and ketones and their acridione derivatives at room temperature

机译:L-脯氨酸在室温下催化芳香醛和酮及其and啶酮衍生物的合成

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摘要

A series of xanthene derivatives were prepared from cyclohexane-1,3-dione and aromatic aldehydes through Knoevenagel-Michael and cyclisation reactions in methanol: ethanol mixture (1:1), catalysed by a very small amount of L-proline at room temperature. Isomeric tetraketones were synthesised from dimedone and aromatic aldehydes under the same condition. Condensation of them with amines gave acridione derivatives. The crystal structure of an acridione was obtained and determined by X-ray single-crystal diffraction.
机译:在室温下,由极少量的L-脯氨酸催化,通过Knoevenagel-Michael和环化反应在甲醇:乙醇混合物(1:1)中由环己烷-1,3-二酮和芳族醛制备了一系列x吨衍生物。在相同条件下,由二甲酮和芳香醛合成了异构四酮。将它们与胺缩合得到a啶酮衍生物。获得了cri啶酮的晶体结构,并通过X射线单晶衍射确定。

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