Dioxopyrrolines. XXVII. Syntheses of 2-Aryl-3-ethoxycarbonyl-Δ2-pyrroline-4, 5-diones

TAKEHIRO SANO; YOSHIE HORIGUCHI; JUN TODA; KAZUE IMAFUKU; YOSHISUKE TSUDA

doi:10.1248/cpb.32.497

Dioxopyrrolines. XXVII. Syntheses of 2-Aryl-3-ethoxycarbonyl-Δ²-pyrroline-4, 5-diones

TAKEHIRO SANO, YOSHIE HORIGUCHI, JUN TODA, KAZUE IMAFUKU, YOSHISUKE TSUDA

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Keywords: restricted rotation

JOURNAL FREE ACCESS

1984 Volume 32 Issue 2 Pages 497-503

DOI https://doi.org/10.1248/cpb.32.497

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Abstract

2-Aryl-3-ethoxycarbonyl-Δ²-pyrroline-4, 5-diones (3) were easily prepared in good yields by condensation of the enamino-esters (2) with oxalyl chloride. The products were characterized by ultraviolet and infrared spectroscopy.

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