US4329301A
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Method of preparing di-organo-magnesium compounds
Assignee: Studiengesellschaft Kohle gGmbH
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Filing: 1980-02-21
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Granted: 1982-05-11
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Expires: 2000-02-21
Abstract
Abstract A method of preparing a di-organo-magnesium compound of the formula R 2 M g in which R is an organic radical bonded to Mg by carbon, comprising reacting magnesium hydride MgH 2 or magnesium and hydrogen with an olefin in the presence of a catalyst comprising a compound of a transition metal of the 4th to 8th secondary group and an organometallic compound or a hydride of a metal of the 1st to 3rd principal groups of the periodic system. Advantageously there is also present a polycyclic aromatic compound or a tertiary amine as activator and the reaction is effected in the presence of tetrahydrofuran as solvent at a pressure of about 1 to 300 bars at about 0° to 200° C., the atomic ratio of Mg:transition metal being from about 10 4 to 10:1, the molar ratio of transition metal compound:organometal compound or metal hydride being from about 0.1 to 10:1, the molar ratio of olefin:magnesium being from about 2 to 10:1 and the olefin being of the formula CH 2 ═CHR' wherein R' is H or an alkyl, cyclo-alkyl, aryl or aralkyl group.
Inventors
- 👤 Borislav Bogdanovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:33
CPC Classifications
C; C07; C07F; C07F3/00; C07F3/02
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
79 words
A method of preparing a di-organo-magnesium compound of the formula R 2 Mg in which R is an organic radical bonded to Mg by carbon, comprising reacting magnesium hydride MgH 2 or magnesium and hydrogen with an olefin in the presence of a catalyst comprising a compound of a transition metal of the 4th to 8th secondary groups and an organometallic compound or a hydride of a metal of the 1st to 3rd principal groups of the periodic system.
Claim 2
Independent Claim
79 words
A method of preparing a di-organo-magnesium compound of the formula R 2 Mg in which R is an organic radical bonded to Mg by carbon, comprising reacting magnesium hydride MgH 2 or magnesium and hydrogen with an olefin in the presence of a catalyst comprising a compound of a transition metal of the 4th to 8th secondary groups and an organometallic compound or a hydride of a metal of the 1st to 3rd principal groups of the periodic system.
Claim 3
Dependent Claim
17 words
A method according to claim 1, wherein the reaction is performed in the presence of a solvent.
Claim 4
Dependent Claim
20 words
A method according to claim 1, wherein the reaction is effected at a pressure of about 1 to 300 bars.
Claim 5
Dependent Claim
18 words
A method according to claim 1, wherein the reaction is effected at from about 0° to 200° C.
Claim 6
Dependent Claim
20 words
A method according to claim 1, wherein the atomic ratio of Mg:transition metal is from about 10 4 to 10:1.
Claim 7
Dependent Claim
24 words
A method according to claim 1, wherein the molar ratio of transition metal compound:organometal compound or metal hydride is from about 0.1 to 10:1.
Claim 8
Dependent Claim
21 words
A method according to claim 1, wherein the catalyst further comprises a polycyclic aromatic compound or a tertiary amine as activator.
Claim 9
Dependent Claim
27 words
A method according to claim 7, wherein the activator comprises a polycyclic aromatic compound selected from the group consisting of naphthalene, anthracene, tetracene, pentacene, phenanthrene and perylene.
Claim 10
Dependent Claim
31 words
A method according to claim 7, wherein the activator comprises a pyridine or a tertiary amine of the formula NR 3 in which R is an alkyl, cycloalkyl or aryl group.
Claim 11
Dependent Claim
18 words
A method according to claim 1, wherein the molar ratio of olefin:magnesium is from about 2 to 10:1.
Claim 12
Dependent Claim
28 words
A method according to claim 1, wherein the olefin is of the formula CH 2 ═CHR' wherein R' is H or an alkyl, cycloalkyl, aryl or aralkyl group.
Claim 13
Dependent Claim
12 words
A method according to claim 1, wherein the reactant is magnesium hydride.
Claim 14
Dependent Claim
13 words
A method according to claim 1, wherein the reactant is magnesium plus hydrogen.
Claim 15
Dependent Claim
96 words
A method according to claim 7, wherein the reaction is effected in the presence of tetrahydrofuran as solvent at a pressure of about 1 to 300 bars at about 0° to 200° C., the atomic ratio of Mg:transition metal being from about 10 4 to 10:1, the molar ratio of transition metal compound:organometal compound or metal hydride being from about 0.1 to 10:1, the molar ratio of olefin:magnesium being from about 2 to 10:1 and the olefin being of the formula CH 2 ═CHR' wherein R' is H or an alkyl, cyclo-alkyl, aryl or aralkyl group.
Claim 16
Dependent Claim
19 words
The method of claim 1, wherein said transition metal is selected from titanium, zirconium, hafnium, vanadium, chromium and nickel.
Claim 17
Dependent Claim
17 words
The method of claim 15 wherein said transition metal is in the form of a halide salt.
Claim 18
Dependent Claim
16 words
The method of claim 16 wherein said halide salt is in the form of a chloride.
Claim 19
Dependent Claim
12 words
The method of claim 17 wherein said halide salt is zirconium chloride.
Claim 20
Dependent Claim
40 words
A method according to claim 1 wherein the catalyst is a compound of a transition metal of the fourth to eighth secondary groups and a hydride of a metal of the first to third principal groups of the periodic system.
Claim 21
Dependent Claim
42 words
A method according to claim 1 wherein the catalyst is a compound of a transition metal of the fourth to eighth secondary groups and an organo metallic compound of a metal of the first to third principal groups of the periodic system.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-10 | 1985-11-09 | 1986-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-10 | 1989-11-09 | 1990-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-10 | 1993-11-09 | 1994-05-11 | $7700.00 | Window Closed / Lapsed |