2-(Amino-substituted methylene)-2H,3H-1-benzothiophene-3-ones were prepared by ring contraction of 3-bromo-4H-1-benzothiopyran-4-one with amines, as a new donor–acceptor chromophore. The structure of 2-(N,N-dimethylaminomethylene) derivative was determined by X-ray crystallographic analysis.

This study demonstrates the synthesis of a new donor-acceptor chromophore, 2-(Aminomethylene)-2H,3H-1-benzothiophene-3-one, as a new donor-acceptor chromophore with potential applications in photocatalysis and photo

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Synthesis of 2-(Aminomethylene)-2H,3H-1-benzothiophene-3-one from 3-Bromo-4H-1-benzothiopyran-4-one as a New Donor–acceptor Chromophore

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