Functionalized 4H‐chromenes represent one class of the most important structural scaffolds
in both synthetic and medicinal chemistry. They often appear in an arrange of biological …

In the present work, a novel Cu (II) complex containing 10-phenanthroline-5, 6-dione (phen-
dione) and acetylacetone (acac) was prepared via solid-phase synthesis on silica-modified …

This paper presents a new strategy for the construction of the chiral 4 H-chromene skeleton.
A series of chiral 2-trifluoromethyl-4-(indol-3-yl)-4 H-chromenes were synthesized in …

A Hg (OTf) 2-catalyzed tandem phospha-Michael addition/cyclization/dehydration of 2-
hydroxychalcones with H-phosphine oxides is presented. This protocol provides a new and …

Here we report a transition metal–and oxidant–free annulation cascade method for the
synthesis of chromeno–isoxazoles. The annulation reaction involves easily accessible …

In the past few decades, N-heterocyclic carbenes (NHCs) have opened the new field of
organocatalysis in synthetic organic chemistry. This review highlights the dramatic progress …

A series of new 2-amino-7-hydroxy-8-methyl-4-aryl-4H-chromene-3-carbonitrile derivatives
(4a-4g) have been synthesized by a one-pot multicomponent reaction of 2-methylresorcinol …

In the past few decades, N-heterocyclic carbenes (NHCs) open the new field of
organocatalysis in synthetic organic chemistry. This review highlights the dramatic progress …