TiO_2 nanoparticles（TiO_2 NPs） worked as an efficient heterogeneous catalyst in a one-pot,three-component,and solvent free Mannich reaction;producing variousβ-aminocarbonyls in good yields,and with good stereoselec...TiO_2 nanoparticles（TiO_2 NPs） worked as an efficient heterogeneous catalyst in a one-pot,three-component,and solvent free Mannich reaction;producing variousβ-aminocarbonyls in good yields,and with good stereoselectivities.The catalyst was easily separated from the reaction mixture and was recycled four times with no significant loss of its catalytic activity.展开更多
A clean,fast,and facile oxidation of multiwalled carbon nanotubes（MWCNTs） by H_2O_2/heteropolyacid（H_3PW_（12）O_（40）） gave highly carboxylated MWCNTs under mild conditions,at a conveniently accessible temperatu...A clean,fast,and facile oxidation of multiwalled carbon nanotubes（MWCNTs） by H_2O_2/heteropolyacid（H_3PW_（12）O_（40）） gave highly carboxylated MWCNTs under mild conditions,at a conveniently accessible temperature.After an easy workup,the product was characterized by SEM,XRD,and FT-IR.展开更多
文摘TiO_2 nanoparticles（TiO_2 NPs） worked as an efficient heterogeneous catalyst in a one-pot,three-component,and solvent free Mannich reaction;producing variousβ-aminocarbonyls in good yields,and with good stereoselectivities.The catalyst was easily separated from the reaction mixture and was recycled four times with no significant loss of its catalytic activity.
文摘A clean,fast,and facile oxidation of multiwalled carbon nanotubes（MWCNTs） by H_2O_2/heteropolyacid（H_3PW_（12）O_（40）） gave highly carboxylated MWCNTs under mild conditions,at a conveniently accessible temperature.After an easy workup,the product was characterized by SEM,XRD,and FT-IR.
