1,3‐Dienes are prevalent substructures in biologically active molecules and versatile building blocks in synthetic chemistry. Herein, using Lewis acids promoted dual 1,3‐sulfur rearrangements, we developed an approach for the direct synthesis of 1,3‐dithianyl substituted dienes. This method enabled the synthesis of tri‐ and tetra‐substituted 1,3‐dienes with high stereoselectivity and good yield under mild reaction conditions.
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