876126-75-9Relevant academic research and scientific papers
N ortho acyl substituted nitrogen-containing heterocyclic compound and process for preparing aminal iron (II) complexes thereof
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, (2016/04/20)
Provided are a process for preparing an N ortho acyl substituted nitrogen-containing heterocyclic compound and an aminal iron (II) complex thereof, and the use of the complexes obtained by the process in an olefin oligomerization catalyst. The N ortho acyl substituted nitrogen-containing heterocyclic compound in the present invention is for example 2-acyl-1,10-phenanthroline or 2,6-diacetyl pyridine as shown in formula b, and the N ortho acyl substituted nitrogen-containing heterocyclic compound in the present invention is produced by a reaction of a precursor thereof in a substituted or unsubstituted nitrobenzene. Preferably the precursor shown in formula I in the present invention is produced by 1,10-phenanthroline reacting with trialkyl aluminum, or a halogenoalkyl aluminum RnAIXm, or a substituted or unsubstituted benzyl lithium Ph′CH2Li, followed by hydrolysis. The preparation method provided in the present invention has a few synthetic steps, an easy process, a low toxic effect, and reduces the preparation costs of the catalyst, and has a promising outlook in the industrial application.
A preparation of the complexes and complexes thereof
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, (2017/01/09)
The invention provides a preparation method and application of a complex, and particularly relates to the preparation method of 2-acetyl-1, 10-phenanthroline aminal-ferrous oxalate complex and application of the complex as an ethylene oligomerization catalyst. The preparation method is as follows: 2-acetyl-1, 10-phenanthroline is prepared from 1, 10-phenanthroline, then a 2-acetyl-1, 10-phenanthroline aminal ligand is obtained by condensation reaction of the 2-acetyl-1, 10-phenanthroline and substituted aniline, and the 2-acetyl-1, 10-phenanthroline aminal ligand reacts with ferrous oxalate to obtain the object product. The preparation method is less in steps and simple in technology, and reduces the cost of catalyst preparation, the solubility of the generated complex in the ethylene oligomerization is increased, the reaction conversion rate is increased, the reaction activity is acceptable, and the industrialization prospect is wide.
One method of oligomerization of ethylene
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, (2017/03/08)
The invention discloses a method for oligomerization of ethylene. The ethylene is subjected to oligomerization in a reaction system containing a primary catalyst, an aluminum-containing cocatalyst, water and an organic solvent, wherein the primary catalyst is a complex of 2-acetyl-1,10-phenanthroline (2,6-diisopropylanil)FeCl2, the formula (I) of the complex is as shown in the specification, the organic solvent is the alpha-olefin of Cn (n is more than 4 and less than or equal to 10), and in the chemical formula, R1-R5 are independently selected from hydrogen, C1-C6 alkyl, halogen, C1-C6 alkoxy and nitryl. The method disclosed by the invention has the advantages that the technical prejudice can be overcome, the process for oligomerization of ethylene can be optimized, the ethylene has high oligomerization activity, the oligomerization of ethylene can be initiated rapidly and operated stably and is hypo-toxic and environment-friendly, the catalytic effect and the production cost can be comprehensively considered and well balanced and the oligomerization cost of ethylene can be reduced greatly. In addition, the method disclosed by the invention is highly practical and has a broad industrial prospect.
