作者:E. N. Koz'minykh、N. N. Trapeznikova、E. A. Chupilova、N. M. Igidov、V. O. Koz'minykh
DOI:10.1023/a:1012393905104
日期:——
Treatment of acetophenone and dibenzoylmethane with excess oxalyl chloride gave heterocyclization products, 2-(3-oxo-5-phenyl-2,3-dihydrofuran-2-ylidene)-5-phenyl-2,3-dihydrofuran-3-one and a mixture of 4-benzoyl-5-phenyl-2,3-dihydrofuran-2,3- with 4-benzoyl-2-dibenzoyImethylene-5-phenylhydrofuran-3-one.