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MDPI, Molbank, 1(2017), p. M927, 2017

DOI: 10.3390/m927

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(Z)-4-(Carbomethoxymethylene)-2-(4-fluorophenyl)-4H-benzo[d][1,3]oxazine

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

The title compound, (Z)-4-(carbomethoxymethylene)-2-(4-fluorophenyl)-4H-benzo[d][1,3]oxazine, was synthesized in 68% isolated yield by palladium-catalyzed oxidative cyclization-methoxycarbonylation of 4-fluoro-N-(2-((trimethylsilyl)ethynyl)phenyl)benzamide. This new heterocyclic derivative was fully characterized by IR, 1H-NMR, 13C-NMR spectroscopies, MS spectrometry, and elemental analysis. The Z configuration around the double bond was unequivocally established by 2D NOESY experiments.