Study and development of a Mannich based corrosion inhibitor for hydrochloric acid acidifying;

Synthesis and antiinflammatory activity of the Mannich bases of the substituted cyclopentanones;

According to the characteristics of oil reservoir at high temperature, the two corrosion inhibitors that are imidazoline and Mannich base were synthesized.

Study on preparation and antioxidant activity of dihydroquercetin mannich salt;

Dihydroquercetin mannich salt,a sihydroquercetin derivative,was prepared via mannich reaction.

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.

Present research status of Mannich bases and Mannich base-prodrugs;