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Process for preparing beta-diketone compound and process for preparing metal complex thereof

A technology of metal complexes and compounds, applied in the field of preparation of β-diketone compounds and the preparation of metal complexes

Inactive Publication Date: 2005-07-06
SHOWA DENKO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In summary, there is no known method for industrialization in which 2,2,6,6-tetramethyl-3,5-heptanedione can be prepared at low cost through simple and easy operations so far. Improve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] In a 2-liter four-neck flask, put 1000 g of DMF and 135 g of potassium tert-butoxide, and heat them to 50° C. under the stirring of a mechanical stirrer. Then, 186 g of methyl pivalate were added using a dropping funnel. Thereafter, a mixed solution of 80 g of pinacolone and 100 g of DMF was added over 3 hours using a dropping funnel, followed by further stirring for 5 hours under heating. It was confirmed by gas chromatography analysis that 76.5 g (yield: 52% (based on pinacolone)) of 2,2,6,6-tetramethyl-3,5-heptanedione were produced in the solution.

Embodiment 2

[0108] The reaction was carried out in the same manner as in Example 1, but changing the solvent to DMAc. It was confirmed by gas chromatography analysis that 47.1 g (yield: 32% (based on pinacolone)) of 2,2,6,6-tetramethyl-3,5-heptanedione were produced in the solution.

Embodiment 3

[0110] The reaction was carried out in the same manner as in Example 1, but changing the solvent to DMI. It was confirmed by gas chromatography analysis that 88.3 g (yield: 60% (based on pinacolone)) of 2,2,6,6-tetramethyl-3,5-heptanedione were produced in the solution.

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PUM

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Abstract

The invention discloses a method for preparing 2,2,6,6-tetramethyl-3,5-heptanedione, which comprises the process of using alkyl pivalate as a solvent without using other solvents Alkyl pivalate and pinacolone are reacted in the presence of an alkali metal alkoxide catalyst, or they are reacted in an amide type solvent or a urea type solvent in the presence of an alkali metal alkoxide catalyst. Also disclosed is a method for preparing 2,2,6,6-tetramethyl-3,5-heptanedione metal using 2,2,6,6-tetramethyl-3,5-heptanedione complex method. The method for preparing 2,2,6,6-tetramethyl-3,5-heptanedione is an industrialized method, wherein alkali metal alkoxides are easy to handle and can be used as Catalyst for the preparation of 2,2,6,6-tetramethyl-3,5-heptanedione from esters and pinacolones.

Description

[0001] Cross References to Related Applications [0002] This application is an application filed pursuant to U.S.C. § 111(a). Pursuant to U.S.C. §119(e)(1), this application is entitled to the filing date of provisional application 60 / 384,393, filed June 3, 2002 pursuant to U.S.C. §111(b). technical field [0003] The present invention relates to a process for the preparation of β-diketone compounds suitable as ligands for volatile organometallic complexes, wherein the organometallic complexes are used as starting material for example for MOCVD (Metal Organic Chemical Vapor Deposition), in particular for the preparation of 2,2 , 6,6-tetramethyl-3,5-heptanedione method. [0004] The present invention also relates to a method for preparing 2,2,6,6-tetramethyl-3,5-heptanedione metal complexes using 2,2,6,6-tetramethyl-3,5-heptanedione. Background of the invention [0005] As a method for producing inorganic or metal thin films, MOCVD has been widely used, and metal alkoxides...

Claims

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Application Information

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IPC IPC(8): C07C45/72C07B61/00C07C45/77C07C49/12C07C49/92C07F1/08C07F3/00C07F5/00C07F7/00H04S1/00
Inventor 斋藤信植田隆谷隆士
Owner SHOWA DENKO KK
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