Daub, Mary Elisabeth; Jung, Hoimin; Lee, Byung Joo; Won, Joonghee; Baik, Mu-Hyun; Yoon, Tehshik P. published the artcile< Enantioselective [2+2] Cycloadditions of Cinnamate Esters: Generalizing Lewis Acid Catalysis of Triplet Energy Transfer>, Quality Control of 17082-09-6, the main research area is cinnamate ester enantioselective cycloaddition photocatalyst Lewis acid cocatalyst.
We report the enantioselective [2+2] cycloaddition of simple cinnamate esters, the products of which are useful synthons for the controlled assembly of cyclobutane natural products. This method utilizes a cocatalytic system in which a chiral Lewis acid accelerates the transfer of triplet energy from an excited-state Ir(III) photocatalyst to the cinnamate ester. Computational evidence indicates that the principal role of the Lewis acid cocatalyst is to lower the absolute energies of the substrate frontier MOs, leading to greater electronic coupling between the sensitizer and substrate and increasing the rate of the energy transfer event. These results suggest Lewis acids can have multiple beneficial effects on triplet sensitization reactions, impacting both the thermodn. driving force and kinetics of Dexter energy transfer.
Journal of the American Chemical Society published new progress about [2+2] Cycloaddition reaction, stereoselective. 17082-09-6 belongs to class chlorides-buliding-blocks, and the molecular formula is C9H7ClO, Quality Control of 17082-09-6.
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