This research demonstrates a new method to synthesize 2-thioxo-1,3-benzothiazin-4-ones, indicating efficient chemical transformations.
An efficient construction of 2-thioxo-1,3-benzothiazin-4-ones has been developed via a PPh₃-promoted desulfurative [4 + 2] annulation between benzo[c][1,2]dithiol-3-ones and isothiocyanates. This strategy is characterized by its mild reaction conditions, operational simplicity, excellent yields, wide functional group tolerance, accessible scalability, and practical transformations.
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Wang et al. (2026) studied this question.
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