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US5468889A
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Boryl zirconocene organic 1,1-dimetallic compounds
Assignee: University of Toledo
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Filing: 1994-06-20
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Granted: 1995-11-21
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Expires: 2014-06-20
Abstract
Abstract Boron-zirconium 1,1,-dimetallic organic compounds useful in organic synthesis such as the preparation of alpha-bromoboranes. The boron-zirconium compounds include boron and zirconiun, and in particular the synthesis, structure and reactivity of E-chlorobis(cyclopentadienyl)- [1-(4,4,5,5-tetramethyl-1,3,2-dioxaborolane-2-yl)-3,3-dimethylbutenyl]zirconium(IV).
Inventors
- 👤 Morris Srebnik
- 👤 Bin Zheng
- 👤 Laurent Deloux
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:16
CPC Classifications
C; C07; C07F; C07F17/00
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
69 words
An organic bimetallic compound containing Zr and B in which Cp 2 is bis(cyclopentadienyl), the compound having the following structure: ##STR20## where R is an organic radical having 2 to 20 carbon atoms that is aliphatic, aromatic, heteroaromatic, or cyclic, or their halogenated substituted derivatives; where R 1 is an alkyl group of 1 to 8 carbon atoms; where Ph is phenyl, Me is methyl and t-Bu is tert-butyl.
Claim 2
Dependent Claim
69 words
An organic bimetallic compound containing Zr and B in which Cp 2 is bis(cyclopentadienyl), the compound having the following structure: ##STR20## where R is an organic radical having 2 to 20 carbon atoms that is aliphatic, aromatic, heteroaromatic, or cyclic, or their halogenated substituted derivatives; where R 1 is an alkyl group of 1 to 8 carbon atoms; where Ph is phenyl, Me is methyl and t-Bu is tert-butyl.
Claim 3
Dependent Claim
13 words
A compound as defined in claim 1 in which the structure is: ##STR21##
Claim 4
Dependent Claim
13 words
A compound as defined in claim 1 in which the structure is: ##STR22##
Claim 5
Dependent Claim
13 words
A compound as defined in claim 1 in which the structure is: ##STR23##
Claim 6
Dependent Claim
17 words
A compound as defined in claim 1 in which at least one R radical is tertiary butyl.
Claim 7
Dependent Claim
17 words
A compound as defined in claim 1 in which R is methyl, ethyl, propyl, butyl or pentyl.
Claim 8
Dependent Claim
16 words
A compound as defined in claim 1 in which R is phenyl, diphenyl, benzyl, or naphthyl.
Claim 9
Dependent Claim
20 words
A compound as defined in claim 1 in which R is phenyl propyl, naphthyl propyl, phenyl ethyl or phenyl butyl.
Claim 10
Dependent Claim
15 words
A compound as defined in claim 1 in which R is cyclopentyl, cyclohexyl or cyclononyl.
Claim 11
Dependent Claim
36 words
A 1,1-bimetallic compound having the following formula: ##STR24## , where R is an alkyl except tert-butyl, alkenyl, cycloalkyl, phenyl, alkyl-phenyl and their chloro- or bromo-substituted derivatives; where ##STR25## is B-borabicyclo[3.3.1]nonyl, and where Cp 2 is bis(cyclopentadienyl).
Claim 12
Dependent Claim
36 words
A 1,1-bimetallic compound having the following formula: ##STR24## , where R is an alkyl except tert-butyl, alkenyl, cycloalkyl, phenyl, alkyl-phenyl and their chloro- or bromo-substituted derivatives; where ##STR25## is B-borabicyclo[3.3.1]nonyl, and where Cp 2 is bis(cyclopentadienyl).
Claim 13
Dependent Claim
19 words
A compound as defined in claim 1 in which R is an alkyl of 1 to 6 carbon atoms.
Claim 14
Dependent Claim
19 words
A compound as defined in claim 1 in which R is an alkenyl of 1 to 6 carbon atoms.
Claim 15
Dependent Claim
40 words
A 1,1-bimetallic compound having the following formula: ##STR26## where R is an alkyl except tert-butyl or n-butyl or 1-methylpropyl, alkenyl, cycloalkyl, phenyl, alkyl-phenyl and their chloro- or bromo substituted derivatives; where ##STR27## is B-borabicyclo[3.3.1]nonyl, and where Cp 2 is bis(cyclopentadienyl).
Claim 16
Dependent Claim
40 words
A 1,1-bimetallic compound having the following formula: ##STR26## where R is an alkyl except tert-butyl or n-butyl or 1-methylpropyl, alkenyl, cycloalkyl, phenyl, alkyl-phenyl and their chloro- or bromo substituted derivatives; where ##STR27## is B-borabicyclo[3.3.1]nonyl, and where Cp 2 is bis(cyclopentadienyl).
Claim 17
Dependent Claim
69 words
An organic bimetallic compound containing Zr and B in which Cp 2 is bis(cyclopentadienyl), the compound having the following structure: ##STR28## where R is an organic radical having 2 to 20 carbon atoms that is aliphatic, aromatic, heteroaromatic, or cyclic, or their halogenated substituted derivatives; where R 1 is an alkyl group of 1 o 8 carbon atoms; where Ph is phenyl, Me is methyl and T-Bu is tert-butyl.
Claim 18
Dependent Claim
69 words
An organic bimetallic compound containing Zr and B in which Cp 2 is bis(cyclopentadienyl), the compound having the following structure: ##STR28## where R is an organic radical having 2 to 20 carbon atoms that is aliphatic, aromatic, heteroaromatic, or cyclic, or their halogenated substituted derivatives; where R 1 is an alkyl group of 1 o 8 carbon atoms; where Ph is phenyl, Me is methyl and T-Bu is tert-butyl.
Claim 19
Dependent Claim
17 words
A compound as defined in claim 14 in which R is methyl, ethyl, propyl butyl or pentyl.
Claim 20
Dependent Claim
16 words
A compound as defined in claim 14 in which R is phenyl, diphenyl, benzyl, or naphthyl.
Claim 21
Dependent Claim
15 words
A compound as defined in claim 14 in which R is cyclopentyl, cyclohexyl or cyclononyl.
Claim 22
Dependent Claim
13 words
A compound as defined in claim 18 in which the structure is: ##STR29##
Claim 23
Dependent Claim
13 words
A compound as defined in claim 14 in which the structure is: ##STR30##
References Cited (Backward Citations)
No citation records indexed.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-20 | 1999-05-22 | 1999-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-20 | 2003-05-22 | 2003-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-20 | 2007-05-22 | 2007-11-21 | $7700.00 | Window Closed / Lapsed |