analytical reagent grade. NMR spectra were rec-orded on a Bruker DRX-300 spectrometer (300 MHz). Infrared spectra were measured with a Mattson Genesis Series FT-IR spectrophotometer. The mass spectra were obtained on a JEOL JMS-700 spectrometer at the Central Instrument Facility of Gyeongsang National University. The melting points were de-termined on a Electrothermal IA-9200 laboratory device and were
包括溶剂在内的所有商业试剂均为
分析试剂级。在 Bruker DRX-300 光谱仪 (300
MHz) 上记录 NMR 光谱。用 Mattson Genesis 系列 FT-IR 分光光度计测量红外光谱。质谱是在庆尚国立大学中央仪器设施的 J
EOL JMS-700 光谱仪上获得的。熔点是在 Electrothermal IA-9200 实验室设备上测定的,未经校正。