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机构地区:[1]大连理工大学精细化工重点实验室,大连116012
出 处:《染料与染色》2004年第2期93-94,共2页Dyestuffs and Coloration
基 金:国家自然科学基金资助项(20376010)
摘 要:在甲基磺酸溶剂中,间苯二酚和偏苯三甲酸酐反应,得到6-和5-羧基荧光素异构体的混合物,反应产物与特戊酰氯,二异丙胺反应,分离得到带有二特戊酰基保护的6-羧基荧光素二异丙胺盐,水解后酯化,得到6-羧基荧光素琥珀酰亚胺酯。Synthesis of active 6-carboxyfluorescein succinimidyl esters was described. Resorcinol was condensed with trimellitic acid in methylsulfonic acid as a solvent to give a mixture of 5-(6-)carboxyfluorescein isomers. The obtained carboxyfluorescein was then reacted with pivalyl chloride and di-isopropy lamine, the purified 6-carboxyfluorescein dipivalate di-isopropy lamine salt was separated. After hydrolysis, tne product of 6-carboxyfluorescein dipivalate di-isopropylamine salt was to be esterized to give the active ester.
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