This method utilizes nickel(II) bromide as a Lewis acid catalyst, enabling cyclization of sulfoxonium ylides and aryl isothiocyanates.
A method is reported which allows for a three‐component cyclization of sulfoxonium ylides, aryl isothiocyanates, and amines to yield 2‐iminothiazolines. The method overcomes the limitation from the scope‐of‐substrate perspective. Success relies on the use of nickel(II) bromide, presumably acting as a Lewis acid catalyst. Investigation of substrate scopes reveals the compatibility of an array of useful functionalities.
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Luu et al. (2025) studied this question.
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