Chemistry of iminofurans: IX. Synthesis and cyclization of (2<Emphasis Type="Italic">Z</Emphasis>)-2-{(2<Emphasis Type="Italic">Z</Emphasis>)-2-[2-(3-R-adamantan-1-yl)-2-oxoethylidene]hydrazinyl}-4-(het)aryl-4-oxobut-2-enoic acids |
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| Authors: | N?A?Pulina A?S?Kuznetsov Email author" target="_blank">A?E?RubtsovEmail author |
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| Institution: | 1.Perm State Pharmaceutical Academy,Ministry of Health Protection of the Russian Federation,Perm,Russia;2.Perm State National Research University,Perm,Russia |
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| Abstract: | 1-(3-R-adamantan-1-yl)-2-(triphenyl-λ5-phosphanylidene)hydrazinylidene]ethanone reacted with 4-aryl(hetaryl)-2,4-dioxobutanoic acids to give 2-{2-2-(3-R-adamantan-1-yl)-2-oxoethylidene]hydrazinyl}-4-aryl(hetaryl)-4-oxobut-2-enoic acids which were shown to exist in solution as mixtures of Z- and E-isomeric enehydrazine tautomers. The products underwent cyclization to 3-{2-(3-R-adamantan-1-yl)-2-oxoethylidene]- hydrazinylidene}-5-aryl(hetaryl)furan-2(3H)-ones. |
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