Process for the synthesis of monomethylmetallocenes and dimethyl

Details Process for the synthesis of monomethylmetallocenes and dimethyl Process for the synthesis of monomethylmetallocenes and dimethyl

1995-04-26

1996-06-04

Nazario-Gonzales, Porfirio

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

556 12, 556 28, 556 53, 534 15, C07F 1700, C07F 700, C07F 500

Patent

active

055234356

ABSTRACT:
Disclosed is a process for preparing methyltransition metal compounds in which the halide metallocene precursor to be alkylated is initially charged in a hydrocarbon desired for the subsequent application, admixed with an aluminum alkyl and subsequently converted by addition of an inorganic salt into the end product: ##STR1## The reaction solution thus obtained can be freed of precipitated salts by simple filtration and directly used for polymerization, since the dialkylmetallocene is obtained in high purity and yield. If desired, it can also be isolated without problems.

REFERENCES:
patent: 5330948 (1994-07-01), Marks et al.
Base-Free Cationic 14-Electron Alkyls of Ti, Zr and Hf as Polymerisation Catalysts; A Comparison; Journal of Organometallic Chemistry, 434 (1992) C1-C5; M. Bochmann and S. J. Lancaster.
Lewis-Base-Free Cationic Zirconocene Complexes Containing and Alkenyl Ligand; Organometallics (1991), 10; pp. 3910-3918; A. D. Horton and A. G. Orpen.
Ionic, Base-Free Zirconocene Catalysts For Ethylene Polymerization; J. Am. Chem. Soc. (1989), 111; pfs 2728-2729; G. G. Hlatky, H. W. Turner and R. R. Eckman .
"Organometallic Chemistry of Titanium, Zirconium and Hafnium," P. C. Wailes, R. S. P. Couttes and H. Weigold, 1974, Academic Press, Inc., 92-97, 150-151, 185-187.
Gmelins Handbook of Inorganic Chemistry, vol. 10, Organo-Zirconium Compounds, 1973, Verlag Chemie-Weinheim/Bergstrasse, pp. 54-58.
"Chemistry of Organo-Zirconium and--Hafnium Compounds," D. J. Cardin, M. F. Lappert, C. L. Raston, 1986, Ellis Horwood Limited 145-180.

Affiliated with

Also associated with

Rating

Process for the synthesis of monomethylmetallocenes and dimethyl does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the synthesis of monomethylmetallocenes and dimethyl, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the synthesis of monomethylmetallocenes and dimethyl will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-384522