US3946057A
Expired / Lapsed
US
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Preparation of metal complexes of 1,3-diketones
Assignee: Union Carbide Corp
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Filing: 1974-02-07
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Granted: 1976-03-23
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Expires: 1994-02-07
Abstract
Abstract Process for preparing metal complexes of organic 1,3-diketones, which comprises, reacting in the presence of an alkylene oxide, a metal halide or hydrates thereof, and an organic 1,3-diketone.
Inventors
- 👤 James Dale Reedy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:02
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/77; C07C49/00; C07C49/92
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
178 words
A process for preparing metal complexes of organic 1,3-diketones having the general formula ##EQU5## wherein R and R' are each individually monovalent organic radicals selected from the group consisting of alkyl, aryl, aralkyl, alkaryl, cycloalkyl, alkoxy, haloalkyl, and haloaryl radicals having from 1 to 12 carbon atoms; M is a metal cation selected from the group consisting of copper, zinc, mercury, lanthanum, cerium, praseodymium, neodymium, samarium, zirconium, chromium, uranium, manganese, iron, cobalt, nickel, platinum, palladium, cadmium, scandium, thorium, vanadium, ytturium, europium, gadolinium, hafnium, and plutonium, n is an integer which corresponds to the electrovalence of M and x has a value of O or a positive integer, which comprises reacting in the presence of an alkylene oxide and an inert organic polar solvent, a metal halide having the formula M(X) n .y(H 2 O) wherein M and n are the same as defined above, X is halogen and y has a value of O or a positive integer, and an organic 1,3-diketone having the formula RCOCH 2 COR' wherein R and R' are the same as defined above.
Claim 2
Dependent Claim
178 words
A process for preparing metal complexes of organic 1,3-diketones having the general formula ##EQU5## wherein R and R' are each individually monovalent organic radicals selected from the group consisting of alkyl, aryl, aralkyl, alkaryl, cycloalkyl, alkoxy, haloalkyl, and haloaryl radicals having from 1 to 12 carbon atoms; M is a metal cation selected from the group consisting of copper, zinc, mercury, lanthanum, cerium, praseodymium, neodymium, samarium, zirconium, chromium, uranium, manganese, iron, cobalt, nickel, platinum, palladium, cadmium, scandium, thorium, vanadium, ytturium, europium, gadolinium, hafnium, and plutonium, n is an integer which corresponds to the electrovalence of M and x has a value of O or a positive integer, which comprises reacting in the presence of an alkylene oxide and an inert organic polar solvent, a metal halide having the formula M(X) n .y(H 2 O) wherein M and n are the same as defined above, X is halogen and y has a value of O or a positive integer, and an organic 1,3-diketone having the formula RCOCH 2 COR' wherein R and R' are the same as defined above.
Claim 3
Dependent Claim
24 words
A process as defined in claim 1 wherein the metal halide employed is an anhydrous metal halide and y has a value of O.
Claim 4
Dependent Claim
23 words
A process as defined in claim 1 wherein the metal halide employed is a hydrated metal halide and y is a positive integer.
Claim 5
Dependent Claim
22 words
A process as defined in claim 1 wherein the alkylene oxide is a lower alkylene oxide having 2 to 4 carbon atoms.
Claim 6
Dependent Claim
30 words
A process as defined in claim 4, wherein the solvent is methanol and wherein the reaction is conducted at a temperature of about 50°C. or below and under atmospheric pressure.
Claim 7
Dependent Claim
22 words
A process as defined in claim 5, wherein R and R' are both methyl radicals and the alkylene oxide is 1,2-propylene oxide.
Claim 8
Dependent Claim
24 words
A process as defined in claim 1, wherein the metal is selected from the group consisting of nickel (II), copper (II) and iron (III).
Claim 9
Dependent Claim
32 words
A process as defined in claim 6, wherein the metal halide is selected from the group consisting of NiCl 2 , NiCl 2 .6H 2 O, CuCl 2 and FeCl 3 .
Claim 10
Dependent Claim
15 words
A process as defined in claim 1, wherein the metal halide is hydrated nickel dichloride.
Claim 11
Dependent Claim
35 words
A process as defined in claim 7, wherein R and R' are lower alkyl radicals, wherein the alkylene oxide contains from 2 to 4 carbon atoms and wherein the solvent is a lower alkyl alcohol.
Claim 12
Dependent Claim
27 words
A process as defined in claim 6 for preparing the complex product of nickel (II) acetylacetonate dihydrate employing NiCl 2 .6H 2 O as the metal halide.
Claim 13
Dependent Claim
15 words
A process as defined in claim 11 wherein the nickel dihydrate complex product is dehydrated.
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) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |