STRUCTURAL DIVERSITY OF 1,3,4,6-TETRACARBONYL COMPOUNDS, THEIR ANALOGUES AND NITROGEN CONTAINING DERIVATIVES (REVIEW)

Ольга Геннадьевна Карманова, Петр Петрович Муковоз, Владислав Олегович Козьминых, Елена Николаевна Козьминых

Аннотация


The article summarizes published data and provides new information concerning the synthesis, structural diversity and properties of 1,3,4,6-tetracarbonyl compounds. Bis-1,3-diketonates are presented in solid state by (E,E)-isomer, and in solutions by dominant (E,E)- and minor (Z,Z)-isomers. Structure peculiarities and mass fragmentation of 1,6-dialkyl-3,4-dihydroxy-2,4-hexadiene-1,6-diones are investigated. Condensation of alkyl methyl ketones with diethyl oxalates and 1,2-diaminobenzene results in 2,3-bis-(2-oxoalkylidene)tetrahydro-1,2,3,4-quinoxalines.With the help of spectral methods isomeric forms of synthesized compounds are found. Compounds containing contiguous 1,2- and 1,3-dioxo fragments look promising for fine organic synthesis and structural chemical analysis.

Ключевые слова


alkyl methyl ketones; oxalic condensation; 1,6-dialkyl-3,4-dihydroxy2,4-hexadiene-1,6-diones; tautomeric forms; 2,3-bis-oxoylidene-1,3,4,6-tetrahydroquinoxalines

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Литература


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