▎ 摘　　要

Functional Schiff base chelating groups (PCA) were covalently grafted onto the surface of magnetic graphene oxide (GO-Fe3O4) via a facile silanization reaction under mild condition. The obtained GO-Fe3O4-PCA was further chelated with CuCl2 as an efficient, robust, and recyclable semi-heterogeneous catalyst (GO-Fe3O4-CuCl2) for one-pot three-component KA(2) coupling of ketones, amines, and alkynes. It exhibited environmentally benign, excellent magnetic separation performance, and higher catalytic activity than other commercially available copper sources. A series of propargylamines are prepared from cycloketones, cycloamines, and phenylacetylene in moderate to excellent yields under microwave (MW) irradiation (70-93%). Interestingly, the catalyst can be separated conveniently by a simple magnetic separation and reused at least four consecutive runs with a slight drop in the product yields. The semi-heterogeneous property and excellent accessibility of GO-Fe3O4-CuCl2 might cause high catalytic activity.