To solve the problem of phosphorus leaching, the new method which uses iron-coated sand to absorb the ortho-P through the drainage pipes was generated recently. However, the method still need more research to apply it in practice. For this purpose, a main question of the thesis is generated: how is the …

The copper(II) catalyzed enantioselective 1,4-addition reactions of diethylzinc to cyclic enones in the presence of novel phosphorus amidite ligands, easily prepared from α,α,α',α'-tetraphenyl-2,2'-dimethyl-1,3- dioxolane-4,5-dimethanol (TADDOL) derivatives, resulted in e.e.s up to 71% for cyclohexenone …