Wang Jun
2010
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Journal
Chemistry & Bioengineering
Abstract
Ethyl 4-(1-ethoxycarbonyl-2-oxocyclopentyl)butanoate was prepared successfully from ethyl 2-oxocyclopentanecarboxylate and ethyl 4-bromobutanoate catalyzed by tetrabutylammonium iodide under mild conditions,with THF as solvent and K2CO3 as base.Spirononane-1,6-dione was synthesized by hydrolysis and decarboxylation of ethyl 4-(1-ethoxycarbonyl-2-oxocyclopentyl)butanoate followed by ring closure reaction.