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Year 2005, Month 10 (Section Full Articles, Page 2437)

1,3-Dipolar cycloaddition of phthalazinium ylides to 5-arylidene-2-spirocyclohexane-1,3-dioxane-4,6-diones

A. V. Sukhotin (a), V. G. Kartsev (b), Yu. A. Aleksandrov (a), and F. M. Dolgushin (c)

Tetrahydrospiropyrrolo[2,1-a]phthalazines were synthesized by the reaction of 5-arylidene-2-spirocyclohexane-1,3-dioxane-4,6-diones with phthalazinium ylides. One of the reaction products, viz., 3-ethoxycarbonyl-2-(4-methoxyphenyl)-2´,2´-pentamethylene-1,2,3,10b-tetrahydrospiro[pyrrolo[2,1-a]phthalazine-1,5´-[1,3]dioxane]-4´,6´-dione, was studied by X-ray diffraction. The spectroscopic characteristics of the reaction products are discussed.

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