Abstract
Organozinc compounds prepared from dialkyl dibromomalonates and zinc react with 2-arylmethyl-eneindan-4,6-diones, 5-arylmethylene-2,2-dimethyl-1,3-dioxane-4,6-diones, as well as with 2-[4-(1,3-dioxoindan-2-ylidenemethyl)phenyl]methyleneindan-1,3-dione and 5-[4-(2,2-dimethyl-4,6-dioxo-1,3-dioxane-2-ylidenemethyl)phenyl]methylene-2,2-dimethyl-1,3-dioxane-4,6-diones to form dialkyl 3-aryl-1′3′-dioxaspiro(cyclopropane-2,2′-indan)-1,1-dicarboxylates, dimethyl 3-aryl-6,6-dimethyl-5,7-dioxa-4,8-dioxaspiro[2,5]octan-2,2-dicarboxylates, dialkyl 2-{4-[3,3-bis (alkoxycarbonyl)-1′,3′-dioxaspiro(cyclopropane-2,2′-indan)-1-yl]phenyl}-1′,3′-dioxaspiro[cyclopropane-2,2′-indan]-1,1-dicarboxylates, and dialkyl 2-{4-[2,2-bis(alkoxycarbonyl)-6,6′-dimethyl-4,8-dioxo-5,7-dioxaspiro[2,5]oct-1-yl]phenyl}-6,6-dimethyl-4,8-dioxo-5,7-dioxaspiro[2,5]octan-1,1-dicarboxylate respectively.
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Shchepin, V.V., Stepanyan, Yu.G., Silasichev, P.S., and Kodess, M.I., Zh. Obshch. Khim., 2006, vol. 76, no. 12, p. 2008.
Shchepin, V.V., Silaichev, P.S., Stepanyan, Yu.G., and Vakhrin, M.I., Zh. Obshch. Khim., 2006, vol. 76, no. 6, p. 981.
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Original Russian Text © V.V. Shchepin, Yu.G. Stepanyan, P.S. Silaichev, 2008, published in Zhurnal Obshchei Khimii, 2008, Vol. 78, No. 5, pp. 787–790.
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Shchepin, V.V., Stepanyan, Y.G. & Silaichev, P.S. Investigation of reactions of the organozinc reagents prepared from zinc and dialkyl dibromomalonates with the derivatives of 2-arylmethyleneindan-1,3-dione and 5-arylmethylene-2,2-dimethyl-1,3-dioxane-4,6-dione. Russ J Gen Chem 78, 929–932 (2008). https://doi.org/10.1134/S1070363208050162
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DOI: https://doi.org/10.1134/S1070363208050162