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Thermal reactions of 2-(2-oxo-3-nitro-4-quinolinyl)malonates

✍ Scribed by A. Elisabeth Täubl; Wolfgang Stadlbauer

Publisher: Journal of Heterocyclic Chemistry
Year: 1997
Tongue: English
Weight: 260 KB
Volume: 34
Category: Article
ISSN: 0022-152X
DOI: 10.1002/jhet.5570340343

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✦ Synopsis

Abstract

Depending on the ester substituent, diethyl 2‐(3‐nitro‐2‐oxo‐4‐quinolinyl)malonates 2 give upon thermolysis ethyl 2‐(3‐nitro‐2‐oxo‐4‐quinolinyl)acetates 4, whereas dimethyl 2‐(3‐nitro‐2‐oxo‐4‐quinolinyl)‐malonates 3 cyclize to give 1‐methoxycarbonylisoxazolo[3,4‐c]quinolin‐4(5__H__)‐ones 5. The necessary reaction conditions can be obtained easily with the help of differential scanning calorimetry.

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