L. K. Dilmukhametova, M. G. Shaibakova, I. R. Ramazanov
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One-pot synthesis of spirocyclopropane-fused tetrahydrofurans by the Cp2ZrCl2-catalyzed reaction of styrene with butyrolactones in the presence of AlCl3 and Mg
The reaction of styrene with butyrolactones in the presence of 2 equiv. each of AlCl3 and Mg and catalyzed by 10 mol.% of Cp2ZrCl2 in tetrahydrofuran led to the corresponding 1-phenyl-4-oxaspiro[2.4]heptanes in 47–57% yield. Presumably, the intermediates are zirconacyclopropane derivatives, similar to the Kulinkovich reagents.
期刊介绍：
Publishing nearly 500 original articles a year, by leading Scientists from Russia and throughout the world, Russian Chemical Bulletin is a prominent international journal. The coverage of the journal spans practically all areas of fundamental chemical research and is presented in five sections:
General and Inorganic Chemistry;
Physical Chemistry;
Organic Chemistry;
Organometallic Chemistry;
Chemistry of Natural Compounds and Bioorganic Chemistry.
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