In the present work, new chromophore types for [2+2] photocycloaddition reactions were evaluated. A general protocol for the intermolecular [2+2] photocycloaddition of different nitroolefins with various alkenes was successfully established, and detailed mechanistic studies were carried out. Vinylsulfones also readily underwent intermolecular [2+2] photocycloaddition with exceptional efficiency and high diastereoselectivity. Lastly, a chiral thiourea-thioxanthone hybrid was synthesized and evaluated as potential catalyst in photochemical reactions.
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In the present work, new chromophore types for [2+2] photocycloaddition reactions were evaluated. A general protocol for the intermolecular [2+2] photocycloaddition of different nitroolefins with various alkenes was successfully established, and detailed mechanistic studies were carried out. Vinylsulfones also readily underwent intermolecular [2+2] photocycloaddition with exceptional efficiency and high diastereoselectivity. Lastly, a chiral thiourea-thioxanthone hybrid was synthesized and evalu...
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