4,4′-bipyridinium sulfonic acid chloride {[SO₃H-4,4′-bipyridine-SO₃H]Cl₂}, as a new solid acid, was synthesized and fully characterized by fourier transform infrared spectroscopy (FT-IR), X-ray diffraction analysis (XRD), scanning electron microscope (SEM), Energy-dispersive X-ray spectroscopy (EDX), thermal gravimetric analysis (TGA), ¹H NMR and ¹³C NMR as well as mass spectra. [SO₃H-4,4′-bipyridine-SO₃H]Cl₂ was successfully applied as a new and efficient catalyst for the preparation of amidoalkyl phenols and bis amidoalkyl phenols as a new category of compounds at 110 °C under solvent-free conditions.

中文翻译：

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4,4'-联吡啶磺酸磺酰氯的合成及表征，作为制备酰胺烷基酚和双酰胺烷基酚的新型高效催化剂

合成了一种4,4'-联吡啶磺酸氯化物{[SO ₃ H-4,4'-联吡啶-S O ₃ H] Cl ₂ }，并通过傅里叶变换红外光谱（FT- IR），X射线衍射分析（XRD），扫描电子显微镜（SEM），能量色散X射线光谱法（EDX），热重分析（TGA），¹ H NMR和¹³ C NMR以及质谱。[SO ₃ H-4,4'-联吡啶-S O ₃ H] Cl ₂ 在无溶剂条件下于110°C成功地用作合成新型烷基化合物的酰胺基烷基酚和双酰胺基烷基酚的新型高效催化剂。