Methods for preparation of cyclopentadienyliron (II) arenes
Abstract
Two improved methods for preparation of compounds with the structure shown in equation X [(Cp)--Fe--(Ar)].sup.+.sub.b X.sup.b- (X) where Cp is an eta.sup.5 complexed, substituted or unsubstituted, cyclopentadienyl or indenyl anion, Ar is an eta.sup.6 complexed substituted or unsubstituted, pi-arene ligand anad X is a b-valent anion where b is an integer between 1 and 3. The two methods, which differ in the source of the cyclopentadienyl anion - Lewis acid complex, utilize a Lewis acid assisted ligand transfer reaction. The cyclopentadienyl anion ligand, assisted by a Lewis acid is transferred to ferrous ion in the presence of an arene. In the first method, the cyclopentadienyl anion is derived from ferrocene and ferrous chloride. In this reaction, the cyclopentadienyliron (II) arene product is derived partially from ferrocene and partially from the ferrous salt. In the second method, the cyclopentadienyl anion - Lewis acid complex is formed by direct reaction of the Lewis acid with an inorganic cyclopentadienide salt. The cyclopentadienyliron (II) arene product of this reaction is derived entirely from the ferrous salt. Cyclopentadienyliron (II) arene cations are of great interest due to their utility as photoactivatable catalysts for a variety of polymerization reactions.
- Inventors:
-
- Oakdale, MN
- Issue Date:
- Research Org.:
- 3M CO
- OSTI Identifier:
- 868038
- Patent Number(s):
- 5059701
- Assignee:
- Minnesota Mining and Manufacturing Company (St. Paul, MN)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07F - ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- DOE Contract Number:
- AC07-88ID12692
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- methods; preparation; cyclopentadienyliron; ii; arenes; improved; compounds; structure; shown; equation; cp; -fe-; b-; eta; complexed; substituted; unsubstituted; cyclopentadienyl; indenyl; anion; pi-arene; ligand; anad; b-valent; integer; source; lewis; acid; complex; utilize; assisted; transfer; reaction; transferred; ferrous; presence; arene; method; derived; ferrocene; chloride; product; partially; salt; formed; direct; inorganic; cyclopentadienide; entirely; cations; due; utility; photoactivatable; catalysts; variety; polymerization; reactions; lewis acid; improved method; improved methods; ferrous chloride; direct reaction; transfer reaction; polymerization reaction; /999/522/
Citation Formats
Keipert, Steven J. Methods for preparation of cyclopentadienyliron (II) arenes. United States: N. p., 1991.
Web.
Keipert, Steven J. Methods for preparation of cyclopentadienyliron (II) arenes. United States.
Keipert, Steven J. Tue .
"Methods for preparation of cyclopentadienyliron (II) arenes". United States. https://www.osti.gov/servlets/purl/868038.
@article{osti_868038,
title = {Methods for preparation of cyclopentadienyliron (II) arenes},
author = {Keipert, Steven J},
abstractNote = {Two improved methods for preparation of compounds with the structure shown in equation X [(Cp)--Fe--(Ar)].sup.+.sub.b X.sup.b- (X) where Cp is an eta.sup.5 complexed, substituted or unsubstituted, cyclopentadienyl or indenyl anion, Ar is an eta.sup.6 complexed substituted or unsubstituted, pi-arene ligand anad X is a b-valent anion where b is an integer between 1 and 3. The two methods, which differ in the source of the cyclopentadienyl anion - Lewis acid complex, utilize a Lewis acid assisted ligand transfer reaction. The cyclopentadienyl anion ligand, assisted by a Lewis acid is transferred to ferrous ion in the presence of an arene. In the first method, the cyclopentadienyl anion is derived from ferrocene and ferrous chloride. In this reaction, the cyclopentadienyliron (II) arene product is derived partially from ferrocene and partially from the ferrous salt. In the second method, the cyclopentadienyl anion - Lewis acid complex is formed by direct reaction of the Lewis acid with an inorganic cyclopentadienide salt. The cyclopentadienyliron (II) arene product of this reaction is derived entirely from the ferrous salt. Cyclopentadienyliron (II) arene cations are of great interest due to their utility as photoactivatable catalysts for a variety of polymerization reactions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}