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Syntheses of some novel optical brightener kernels via 1,3-dipolar cycloaddition reactions

Türker, L
Güleç, A
1,3-Dipolar cycloaddition reactions of 3-phenylphthalazinium-1-olate with various dipolarophiles which lead to some potential optical brightener structures are described. The cycloadducts obtained from vinyl ethers exhibited the Price effect, whereas N-vinyl carbazole adduct displayed atropisomerism.