synthesized from N-nitroso-2-fluorophenylglycines and characterized by NMR spectroscopy. These were employed further in synthesis of the corresponding 1-(2-fluorophenyl)pyrazoles by 1,3-dipolar cycloaddition reaction with dimethyl acetylenedicarboxylate (DMAD) as activated dipolarophile. The sydnones as reaction intermediates were characterized by single crystal X-ray diffraction analysis showing interesting
由N-亚硝基-2-氟苯基甘氨酸合成苯环上带有氟和溴原子的3-Arylsydnones,并通过核磁共振光谱对其进行表征。这些进一步用于合成相应的 1-(2-氟苯基) 吡唑,通过 1,3-偶极环加成反应与作为活化的亲偶极体的乙炔二甲酸二甲酯 (DMAD) 反应。作为反应中间体的 sydnones 通过单晶 X 射线衍射分析表征,显示出有趣的特征,例如卤素键合作为模拟晶体结构的重要相互作用。