Improved metal-ligand complex catalyzed processes

A technology of complexes and ligands, applied in the direction of organic compound/hydride/coordination complex catalysts, organic chemical methods, chemical instruments and methods, etc., can solve the problem that the heat of evaporation of phosphorus-containing compounds cannot be easily measured, Problems such as inconvenient density measurement

Inactive Publication Date: 2002-10-09
UNION CARBIDE CHEM & PLASTICS TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0114] The heat of vaporization of phosphorous-containing compounds cannot be easily measured because many such compounds decompose at high temperatures
Also, since many phosphorous compounds are solid at room temperature, it is not convenient to measure their density

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0145] A solution of rhodium dicarbonyl acetylacetonate and ligand A containing 300 ppm rhodium at a ligand / rhodium molar ratio of 20 / 1 and ligand A in hexane (20 g) was placed in an 80 ml Parrr reactor and heated at 90° C. and 100psi syngas (CO / H 2 1:1) for about 1 hour. A mixture of 1,2,3,6-tetrahydrobenzaldehyde (6 g) and octane (4 g, internal standard) was charged to the autoclave. The reaction rate was determined by gas chromatographic analysis of samples taken during the reaction. The reaction rate was found to be 2.5 moles per liter-hour (mol / L-hr).

Embodiment 2-6

[0147] The procedure described in Example 1 was repeated using Ligands B-F instead of Ligand A. The reaction rates of ligands B-F are summarized in Table 1.

[0148] Table 1

[0149] Example Ligand Rate mol / L-hr

[0150] 2 B 3.4

[0151] 3 C 4.0

[0152] 4 D 3.6

[0153] 5 E 3.7

[0154] 6 F 3.3

Embodiment 7

[0156] The procedure described in Example 1 was repeated using Ligand C instead of Ligand A and using toluene instead of hexane. The reaction rate was found to be 4.4 mol / L-hr.

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Abstract

The invention relates to a method comprising one or more cyclization reactants, metal-organophosphorus ligand complex catalyst, optional free organophosphorus ligand, non-polar solvent and one or more cyclization products A method for separating the one or more cyclization products from a reaction product stream, wherein the method comprises: (1) separating the metal-organophosphorus ligand complex catalyst, optional free organophosphorus ligand and non- In the presence of a polar solvent, reacting the one or more cyclization reactants to form a heterogeneous reaction product stream; and (2) separating the heterogeneous reaction product stream to obtain , a metal-organophosphorus ligand complex catalyst, an optional free organophosphorus ligand and a nonpolar phase of a nonpolar solvent and a polar phase comprising the one or more cyclization products.

Description

Summary of the invention technical field [0001] The present invention relates to an improved metal-organophosphorus ligand complex catalyzed process. More specifically, the present invention relates to metal-organophosphorous ligand complex catalyzed processes in which desired products can be selectively separated from reaction product streams by phase separation. Background of the invention [0002] It is known in the art that various products can be produced by the reaction of one or more reactants in the presence of metal-organophosphorous ligand complex catalysts. However, the stabilization of catalysts and organophosphorous ligands remains a major concern of the prior art. Clearly catalyst stability is a critical issue for the application of any catalyst. Loss of catalyst or catalytic activity due to undesired reactions of very expensive metal catalysts can compromise production of desired products. Furthermore, the production cost of the product increases signific...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J38/00C07B61/00C07B63/00C07C29/141C07C45/49C07C45/50C07C45/78C07C45/80C07C45/82C07C47/32B01J31/40C07C47/347C07C47/36C07C209/26C07C209/48C07C209/84C07C211/18C07C253/30C07C253/34C07C255/46C07C255/47
CPCC07B63/00C07C29/141C07C45/50C07C45/78C07C45/80C07C47/32C07C209/26C07C253/30C07B2200/09Y02P20/582C07C2601/14C07C31/276C07C47/347C07C47/36C07C45/49
Inventor J·N·阿伊罗普洛斯D·R·布赖恩特M·L·图利钦斯基J·S·卡内尔P·福利B·B·菲什
Owner UNION CARBIDE CHEM & PLASTICS TECH CORP
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