A metal‐free [4+1] annulation of in‐situ generated ortho ‐quinone methides ( o ‐QMs) and CF 3 −imidoyl sulfoxonium ylides (TFISYs) has been achieved under mild conditions, which provides a facile and straightforward access to a variety of trifluoromethyl‐containing 2,3‐dihydrobenzofurans in moderate to excellent yields.
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