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Five-Membered 2,3-dioxoheterocycles: XCV. Recyclization of 4-benzoyl-5-phenylfuran-2,3-dione at the action of substituted 1,3,3-trimethyl-2-azaspiro[4.5]dec-1-enes. Crystal and molecular structure of substituted 5-(2-azaspiro[4.5]dec-1-ylidene)cyclopent-3-ene-1,2-dione |
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| Authors: | V V Konovalova Yu V Shklyaev P A Slepukhin A N Maslivets |
| Institution: | 1. Institute of Technical Chemistry, Ural Branch of Russian Academy of Sciences, Perm, Russia 2. Postovskii Institute of Organic Synthesis, Ural Branch of Russian Academy of Sciences, Ekaterinburg, Russia 3. Perm State National Research University, Perm, 614990, Russia |
| Abstract: | 4-Benzoyl-5-phenylfuran-2,3-dione reacts with 2′,5′,5′-trimethyl-4′,5′-dihydro-4H-spironaphthalene-1,3′-pyrrol]-4-one and 8-(2-methoxy-5-methylphenyl)-1,3,3,9-tetramethyl-2-azaspiro4.5]deca-1,7-dien-6-one with the formation of (Z)-3-benzoyl-5-(5′,5′-dimethyl-4-oxo-4H-spironaphthalene-1,3′-pyrrolidin]-2′-ylidene)-4-phenylcyclopent-3-ene-1,2-dione, whose structure was proved by XRD analysis, and of (Z)-3-benzoyl-5-{8-(2-methoxy-5-methylphenyl)-3,3,9-trimethyl-6-oxo-2-azaspiro4.5]dec-7-en-1-ylidene}-4-phenylcyclopent-3-ene-1,2-dione. |
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