Two series of solid complexes of rare earth nitrates and picrates with the "back-to-back" terpyridine, 6′,6″-bis(2-pyridyl)-2,2′:4′,4″:2″,2′″-quaterpyridine (L) have been synthesized. These complexes...Two series of solid complexes of rare earth nitrates and picrates with the "back-to-back" terpyridine, 6′,6″-bis(2-pyridyl)-2,2′:4′,4″:2″,2′″-quaterpyridine (L) have been synthesized. These complexes have been characterized by elemental analysis, conductivity measurements, thermal analysis and IR spectroscopy. At the same time, the luminescent properties of the Eu(Ⅲ) and Tb(Ⅲ) complexes were also studied.展开更多
目的研究抗生素氟氯西林钠的关键中间体3-(2′-氯-6′-氟苯基)-5-甲基-4-异噁唑甲酰氯的合成方法,使之适合工业化生产。方法以2-氯-6-氟苯甲醛为原料,经肟化、氯化、环合、水解、酰氯化等步骤制得目标化合物。结果合成产物的化学结构经I...目的研究抗生素氟氯西林钠的关键中间体3-(2′-氯-6′-氟苯基)-5-甲基-4-异噁唑甲酰氯的合成方法,使之适合工业化生产。方法以2-氯-6-氟苯甲醛为原料,经肟化、氯化、环合、水解、酰氯化等步骤制得目标化合物。结果合成产物的化学结构经IR,1H-NMR,13C-NMR and MS确证,总收率为60.2%。结论此方法收率高,成本低,适合工业化生产。展开更多
文摘Two series of solid complexes of rare earth nitrates and picrates with the "back-to-back" terpyridine, 6′,6″-bis(2-pyridyl)-2,2′:4′,4″:2″,2′″-quaterpyridine (L) have been synthesized. These complexes have been characterized by elemental analysis, conductivity measurements, thermal analysis and IR spectroscopy. At the same time, the luminescent properties of the Eu(Ⅲ) and Tb(Ⅲ) complexes were also studied.
文摘目的研究抗生素氟氯西林钠的关键中间体3-(2′-氯-6′-氟苯基)-5-甲基-4-异噁唑甲酰氯的合成方法,使之适合工业化生产。方法以2-氯-6-氟苯甲醛为原料,经肟化、氯化、环合、水解、酰氯化等步骤制得目标化合物。结果合成产物的化学结构经IR,1H-NMR,13C-NMR and MS确证,总收率为60.2%。结论此方法收率高,成本低,适合工业化生产。