Yb(OTf)<sub>3</sub> Anchored on Crosslinked Chitosan Microsphere: A Green Heterogenized Catalyst for the Synthesis of Bispiro‐Fused Heterocycles
作者:Lin Chen、Wen‐Ya Jiao
DOI:10.1002/ejoc.202300041
日期:2023.5.12
Yb(OTf)3 anchored on crosslinked chitosan microsphere (Yb(OTf)3@CCM) was prepared by facile processes. Using Yb(OTf)3@CCM as a green heterogeneous catalyst, the three-component [3+2] cycloaddition of isatins, tetrahydroisoquinolines and 5-alkenyl rhodanines was developed, which gave access to a suite of architecturally complex bispiro-fused heterocycles merging four pharmacophores.