A convenient method for the synthesis previously unknown hydroxy-containing aryl(hetaryl)-ethenes (terarylenes) with a pyrazole bridge was elaborated, which is based on the reaction of hydrazines with the products of condensation of allomaltol with arylglyoxals. Two isomeric pyrazoles can be formed depending on the nature of substituents in the hydrazine molecule. The protocols for identification of obtained products were suggested based on 2D 1 H- 13 C HMBC NMR spectroscopy and 1D selective NOESY experiments (SELNOGP).

中文翻译：

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吡唑和异麦芽糖醇片段合成含羟基的四亚芳基化合物

详细阐述了一种合成以前未知的带有吡唑桥的含羟基的芳基（杂芳基）-乙烯（terarylenes）的方便方法，该方法基于肼与异麦芽醇与芳基乙二醛缩合产物的反应。根据肼分子中取代基的性质，可以形成两种异构吡唑。基于 2D 1 H-13 C HMBC NMR 光谱和 1D 选择性 NOESY 实验 (SELNOGP) 建议了用于鉴定获得的产品的方案。