Issue 15, 1997
From the journal:

Journal of the Chemical Society, Perkin Transactions 1

Unusual condensation of 2-(2-dimethylaminovinyl)-1-benzopyran-4-one with dimethyl acetylenedicarboxylate: formation of 2,3-bis(methoxycarbonyl)xanthen-9-one

Chandra Kanta Ghosh,   Samita Bhattacharyya  and  Amarendra Patra  

Abstract

Reaction of dienamine 2 (R = H and Me) with N -phenylmaleimide or chromone 3 gives xanthones 5 and 8, respectively, through initial [4 + 2] cycloaddition, whereas reaction with dimethyl acetylenedicarboxylate affords xanthone 13.

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Article information

DOI
https://doi.org/10.1039/A703495D
Article type
Paper

J. Chem. Soc., Perkin Trans. 1, 1997, 2167-2168

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Unusual condensation of 2-(2-dimethylaminovinyl)-1-benzopyran-4-one with dimethyl acetylenedicarboxylate: formation of 2,3-bis(methoxycarbonyl)xanthen-9-one

C. Kanta Ghosh, S. Bhattacharyya and A. Patra, J. Chem. Soc., Perkin Trans. 1, 1997, 2167 DOI: 10.1039/A703495D

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