A novel and streamlined approach to synthesizing benzotriazepin-1-ones has been developed through a hexafluoroisopropanol-promoted decarboxylative cascade reaction between isatoic anhydrides and hydrazonoyl chloride. The [4 + 3] annulation of hexafluoroisopropyl 2-aminobenzoates with nitrile imines, generated in situ, is a key feature of this innovative reaction. This approach has offered a simple and efficient method for synthesizing a broad range of structurally intricate and highly functional benzotriazepinones.
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