The present invention relates to the process for the preparation of Pyrylium salts having the formula represented below. Present invention provide a simplified method of producing symmetrical and unsymmetrical pyrylium salts. The invention explores readily available starting materials with reaction conditions which are suitable for industrial scale applications. All the synthesized compounds were confirmed by various spectroscopic techniques such as Fourier transform infrared spectroscopy, 1H NMR, 13C NMR, 19F NMR spectroscopy, and single-crystal X-ray analysis. Mass of the compounds confirmed by HRMS analysis.
本发明涉及制备具有下面表示的分子式的
吡啶盐的过程。本发明提供了一种简化的方法来生产对称和非对称的
吡啶盐。该发明探索了易获得的起始材料,以及适用于工业规模应用的反应条件。所有合成的化合物均通过各种光谱技术进行确认,包括傅里叶变换红外光谱、质子核磁共振、
碳-13核磁共振、
氟-19核磁共振和单晶X射线分析。化合物的质量经过高分辨质谱分析确认。