71 results about "Zirconium atom" patented technology

The invention provides a novel metallocene catalyst and a green catalytic synthesis method of a polyarylate substituted 1,3-dicarbonyl compound developed by the catalyst. Zirconium atoms in the metallocene catalyst are connected with each other through two isopropyl-substituted cyclopentadienyl rings to display tetravalence; the zirconium atoms are coordinated with three hydrones; and the overall organic zirconium cationic part and the corresponding anions form an ion bond. The green synthesis method comprises the following steps: with a 1,3-dicarbonyl compound with active hydrogen as a reaction raw material, and aryl alcohol as an alkylation agent, carrying out intramolecular dehydration alkylation reaction under catalysis of perfluorooctane sulfonate isopropyl cyclopentadienyl zirconium; and obtaining a series of multiaryl-substituted 1,3-dicarbonyl compounds at a relatively low temperature and high yield. The method has the main advantages of being mild in reaction condition, simple to test and operate, high in yield and the like; the reaction is suitable for kinds of 1,3-dicarbonyl derivatives and different aryl alcohol; with perfluorooctane sulfonate isopropyl cyclopentadienyl zirconium as a catalyst, the catalyst can be recycled and used for a plurality of times; and meanwhile, the sole by-product is water, and has the advantages of being green, free of pollution and the like.