本文首次合成了几种含苯并呋喃苯并噻吩环的新的芳香族四羰基化合物，并对它们进行了元素分析和红外光谱测定。
Several new bis (1,2-dicarbonyl) compounds containing benzofuran or benzothiophene ring have been synthesized and identified by elemental analysis and Infra red spectroscopy.
本文首次合成了几种含苯并呋喃苯并噻吩环的新的芳香族四羰基化合物，并对它们进行了元素分析和红外光谱测定。
Several new bis (1,2-dicarbonyl) compounds containing benzofuran or benzothiophene ring have been synthesized and identified by elemental analysis and Infra red spectroscopy.
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