A. Kamalova, M. Dmitriev, T. V. Sal’nikova
Jun 1, 2018
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Journal
Russian Journal of Organic Chemistry
Abstract
Ethyl 1-aryl-4,5-dioxo-2-phenyl-4,5-dihydro-1H-pyrrole-3-carboxylates reacted with tetronic acid in boiling anhydrous toluene in the presence of acetic acid to give ethyl 1-aryl-4,4-bis(4-hydroxy-2-oxo-2,5-dihydrofuran-3-yl)-5-oxo-2-phenyl-4,5-dihydro-1H-pyrrole-3-carboxylates.