High stereoselectivity synthesis of Z-3-methyleneisoindolin-1-ones on a Cu/ETS-10 catalyst via domino coupling–cyclization without the use of protective groups and ligands
Literature Information
Huiling Hu, Changjun Liu, Chaojie Zhu, Chenghong Liu, Tiandi Tang
Controlling the spatial selectivity of the coupling sites in two-molecule reactions is critical for stereoselective product synthesis. Herein, we report a novel strategy that uses basic ETS-10 zeolite-supported copper (Cu/ETS-10) as a catalyst for the highly selective synthesis of Z-3-methyleneisoindolin-1-ones in the absence of ligands. It was found that the rigidity of the zeolite skeleton was conducive to the high configurational selectivity of the product. The Cu/ETS-10 catalyst was easily recovered by simple filtration and could be reused five times without loss of its initial activity.
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