The dichloro[(-)-sparteine-N,N']copper(II) complex provides Henry adducts with high enantioselectivities (73-97% ee) in Henry reaction between nitromethane and various aldehydes.

No abstract

No abstract

ortho‐Benzoylation of phenols with aryl aldehydes to afford the substituted 2‐hydroxybenzophenones can be catalyzed efficiently by Fe3O4 nanoparticles under ligand‐free conditions. This method is useful for the preparation of xanthones in good yields. The catalyst can be magnetically removed and recycled easily over four cycles without a significant decrease in activity.

No abstract