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The synthesis of novel crown ethers. Part IV. Coumarin derivatives of [18]crown-6 and cation binding from fluorescence spectra
Erk, Çakιl L.; Göçmen, Ayten; Bulut, Mustafa (Editura Stiintifica F. M. R., 1998)4-H, 4-methyl and 4-phenyl-1-benzopyran-2-one derivatives of [18]crown-6 derivatives were synthesised from 6,7- and 7,8-dihydroxy-1-benzopyran-2-one reacting with pentaethylene glycol ditosylate in K2CO3/DMF/water. The ... -
The synthesis of novel macrocycles, Part V. The coumarin crown ethers and cation binding with fluorescence spectra
Erk, Çakıl; Göçmen, Ayten; Bulut, Mustafa (Gordon Breach Scı Publ Ltd, 1999)The 4-H, 4-methyl and g-phenyl derivatives of benzo-alpha-pyrone of 12-crown-4 and 15-crown-5 were synthesised starting from 4-substituted-6,7-dihydroxy- and 7,8-dihydroxybenzo-alpha-pyrones which reacted with dichloropolyethylene ...