A series of 1,4-dihydropyridines have been prepared by a one-pot condensation of aldehydes,ethyl aeetoacetate,and ammonium acetate in the presence of a heteroge
Gas phase hydrogenation of erotonaldehyde was performed over 1 wt% Rh/ZnO-Al2O3 catalysts with various Zn/Rh atomic ratios.Monometallic Rh/Al2O3 was also prepare