A new macroporous adsorption resin immobilized tannins was prepared by immobilizing tannins on styrene-divinylbenzene copolymer using Mannich reaction,The preparation condition of amino resin and immobilizing reaction with tannins were systematically studied,and the optimum synthesis technology was obtained∶amino resin∶formaldehyde∶tannins(mass ratio) =2∶0.

A lignin-base flocculant LSDC was prepared by the Mannich reaction of the calcium lignosulfonate - acryamide copolymer.

The key intermediates of the sex pheromone of the pine sawfly 2-methyl-octanol and 2-methyl- decanol were synthesized from n-octanol and n-decanol sucessively via the oxidation with pyridinium chlorochromate(PCC), Mannich reaction, catalytic transferhydrogenation over Pd/C and reduction by LiAlH 4 in the total yield of 23.

Mannich polymerization reaction of diacetyl ferrocene, methanol and pphenylenediamine are performed at 65～67?℃ or slightly below in the presence of concentrated hydrochloric acid as the catalyst and ethanol as the solvent.

First, m-aminotoluene was applied to prepare m-fiuorotoluene byBalz-Schemann reaction with sodium nitrite and sodium fiuoroborate, thenm-fluorobenzaldehyde was achieved by liq.

Preparation and characterization of nickel(Ⅱ)-diethylenetriamine complex in the interlayer of montmorillonite;

Studies on corrosion inhibition and absorb thermodynamics of diethylenetriamine on brass in hydrochloric acid solution;

Synthesis of choline chloride by PVC adsorbing catalyst diethylenetriamine