Bis(cyclopentadienyl)zirconium dichloride NEW

CAS:	1291-32-3
MF:	C10H10Cl2Zr
MW:	292.32
EINECS:	215-066-8
Product Categories:	Catalyst;metallocene;Classes of Metal Compounds;Metallocenes;Titanocene, etc.;Transition Metal Compounds;Zr (Zirconium) Compounds;In the production of anti-cancer drugs organic intermediates;Produce other metallocene compounds.;Used for SBS, SIS hydrogenation catalyst and MVLDPE;material;PETRO CATALYST;Zr
Mol File:	1291-32-3.mol

Description	Bis(cyclopentadienyl)zirconium(IV) Dichloride or zirconocene dichloride is one of numerous organo-metallic compounds (also known as metalorganic, organo-inorganic and metallo-organic compounds) sold by American Elements under the trade name AE Organo-MetallicsTM. As is the case for other transition metal metallocenes, bis(cyclopentadienyl)zirconium(IV) dichloride is most often used as a catalyst.
Chemical Properties	Bis(cyclopentadienyl)zirconium dichloride is a white crystals. Soluble in polar organic solvents. Stable in dry air, very slowly hydrolyzes in moist air.
Uses	Bis(cyclopentadienyl)zirconium dichloride is used for for Stereoselective Glycosidation. It is also used in the catalyzed transamidation of primary amides with amines. Zirconocene dichloride can also be used to prepare the Negishi reagent,in oxidative cyclisation reactions. Other applications include it is used to promote greener amidations of carboxylic acids and amines in catalytic amounts. This technology avoids the requirement of preactivation of the carboxylic acid or use of coupling reagents.
Uses	Zirconocene Dichloride is the main catalyst for Kaminsky-type catalytic systems, which have high activity and isotropy for catalytic olefin polymerization, and catalytic olefin zwitterionization has also been reported in the literature. Zirconocene Dichloride is also the main component of Negishi's reagent, which can be used for the ring formation of intramolecular dienes and the ring formation of intermolecular alkynes and olefins. Rubber accelerator, component of a catalyst system for polymerization of vinyl monomers, curing agent for water-repellent silicone materials, agent for plating with zirconium.
Application	Used to promote greener amidations of carboxylic acids and amines in catalytic amounts. This technology avoids the requirement of preactivation of the carboxylic acid or use of coupling reagents. Direct amide formation from unactivated carboxylic acids and amines. Useful in the synthesis of a wide range of early-transition-metal complexes and organometallic compounds.
Preparation	Synthesis of zirconium dichlorodichloride A stirring magnet was placed in a 500 mL three-necked flask, fitted with a constant pressure dropping funnel and reflux condenser, evacuated, and replaced with pure nitrogen three times. The flask was added with 50mL of toluene and 22.3g (0.1mol) of ZrCl4, and the suspension was made by turning on the stirring. Add the THF solution of sodium cyclopentadienylide to a constant pressure dropping funnel, add dropwise at room temperature, keep the reaction solution slightly boiling, after the dropwise addition, continue the reaction for 2h. Under the heating of oil bath at 50℃, evaporate the solvent under reduced pressure to obtain a yellow solid. Put the solid into a soxhlet extractor and extract with CHCl3. Most of the solvent in the extract was evaporated under reduced pressure, and the solid was precipitated after cooling and filtered. The product was washed with a small amount of CHCl3 and dried under vacuum, yielding 20.2g of white crystals, 69% yield.

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Hebei Mojin Biotechnology Co., Ltd, Our company is a professional in 4'-Methylacetophenone,Levamisole hydrochloride ,N-Methylformamide and other chemical reagents research and development production enterprises. Our business covers more than 30 countries, most of the big customers come from Europe, America and other countries in the world, we can guarantee the quality and price. In recent decades, with the efforts of all employees, we have established many cooperative companies in shandong, henan, guangdong and other places. Our corporate purpose is based on the market, enhance the strength, take the road of scientific and environmental sustainable development, relying on the country. Technology r & d center, increase the investment in r & d, based on the domestic market, expand the international market, manufacturing quality products, sincere service to the society, into a modern, ecological, scientific and technological enterprise world.

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