The amino side chains do matter: chemoselectivity in the one-pot three-component synthesis of 2-amino-4H-chromenes by supramolecular catalysis with amino-appended β-cyclodextrins (ACDs) in water
作者:Yufeng Ren、Bo Yang、Xiali Liao
DOI:10.1039/c5cy01888a
日期:——
In this study, the one-pot three-component synthesis of 2-amino-4H-chromenes was accomplished by supramolecular catalysis using a series of well-designed amino-appended β-cyclodextrins (ACDs) in water. The catalytic mechanism was elucidated in detail with 1D and 2DNMR and ESI-MS analyses, while the key roles of amino side chains of ACDs in the reaction chemoselectivity were addressed for the first
A novel Cu(II) nanoparticles anchored on cyanuric chloride-attached magnetic nanocatalyst: A highly stable, recyclable and efficient nanocatalyst for the synthesis of chromene derivatives
As a novel core-shell magneticnanocatalyst, a copper nanocatalyst, Cu(II)-Schiff base-TCT-APTES@SiO@FeO was successfully synthesized through the reaction of the cyanuric chloride grafted onto the core-shell magneticnanocatalyst with Schiff base complex and finally treated with Cu(NO)·3HO. The noteworthy point is that the novel Schiff base separated by employing hydrazine with 2-pyridinecarboxaldehyde