For the first time, a review has been conducted on the methods for the synthesis, as well as on the chemical, physical and biological properties, of 5-arylpent-4-ene-1,3-diones (hemicurcuminoids).
Herein, we describe a greener and more general method for the chemoselective reduction of α,β-unsaturated ketones using organoaluminum catalysis.
An L-proline catalyzed-Barbas-[4 + 2]-cycloaddition reaction is reported for the synthesis of spiro[3-arylcyclohexanone]oxindole derivatives. The method can tolerate a diverse substrate scope with high yields.
A metal- and additive-free reaction of easily accessible N-acylpyridinium iodides, methylvinyl ketones and amines provides access to meta-substituted anilines.
Asymmetric synthesis of warfarin in ESI-microdroplets by using chiral 1,2-diamino organocatalysts.