The synthesis of chromophore ended glycoles, part IV. Bis-coumarin derivatives ended polyglycols
作者:Hülya Tuncer、ÇakL Erk
DOI:10.1002/jhet.5570430501
日期:2006.9
The coumarin derivatives of bis-resorcin ended polyglycols were prepared in two ways: Bis-4-alkyl-7-oxycoumarin ended mono and diethyleneglycols were prepared starting from bis(3-hydroxyphenyl)glycols by coumarin condensation using relevant β-ketoesters. Accordingly, 4-methyl, 4-trifluoromethyl, 4-n-propyl and 4-phenyl derivatives of 7-hydroxycoumarins were prepared in good yields. They were then converted
双间苯二酚封端的聚乙二醇的香豆素衍生物以两种方式制备:双(4-羟基-7)-氧基香豆素封端的单和二甘醇由双(3-羟苯基)二醇通过相关的β-酮酸酯通过香豆素缩合制备。因此,以高收率制备了7-羟基香豆素的4-甲基,4-三氟甲基,4-正丙基和4-苯基衍生物。然后通过分别与三和四乙二醇二氯化物在Na 2 CO 3 / DMF中反应,将它们转化为双香豆素末端的三和四乙二醇衍生物。使用IR,1 H nmr和低分辨率质谱法鉴定了产物。Li +,Na +和Rb + 用稳态荧光光谱法研究了产物在乙腈中阳离子结合行为的金属/配体选择性。