Abstract
A method that cleanly converts the 1,4-disubstituted 1,2,3-triazole products of the copper-catalyzed ‘click’ dipolar cycloaddition reaction of benzyl azide with terminal alkynes into 1,5-disubstituted triazoles is described. Selective N-alkylation of 1,4-disubstituted 1,2,3-triazoles under microwave irradiation is followed by debenzylation of the resulting 1,3,4-trisubstituted triazolium cations by treatment with potassium tert-butoxide.
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