<正>A highly efficient benzylation of arenes and heteroarenes catalyzed by HfCl_4/HfO_2 has been developed.Broad scope of benzylation reagents have been used in
<正>Michael addition of indole and pyrrole to a variety ofα,β-unsaturated ketones was efficiently promoted by a catalytic amount of GaCl_3 in aqueous media to
<正>A practical protocol to obtain 1,1'-binaphthyl-2,2'-diamine was developed from 2-naphthol and 2-naphthylhydrazine under mild conditions:solvent-free