<正>A series of chiral secondary alcohols were easily prepared by means of asymmetric hydrogenation of prochiral aromatic ketones using a new((R_(ax))-BuP)/(R,R
<正>Sodium dihydrogen phosphate(NaH_2PO_4) efficiently catalyzes the condensation reaction of benzil,aldehydes,amines and ammonium acetate in a four-component r