

SYNTHESIS OF NOVEL γ-BUTYROLACTONE-BASED PHENAZINE COMPOUNDS VIA MICROWAVE-ASSISTED MULTICOMPONENT DOMINO REACTIONS

Abstract
A series of new and significative γ-butyrolactone-based phenazines were synthesized through two-step one-pot five-component reactions of 2-hydroxy-1,4-naphthoquinone, a variety of aromatic aldehydes, benzene-1,2-diamine, tetronic acid, and ammonium acetate in glacial acetic acid. The synthesis proceeded via condensation, Michael addition, tautomerization sequence of steps. All the synthesized compounds were fully characterized by spectral data.
Keywords
γ-butyrolactone; naphthoquinone; phenazine; microwave-assisted multicomponent reaction
Latvian Institute of Organic Synthesis - Aizkraukles iela, 21, Riga, LV-1006, Latvia - hgs@osi.lv