N ortho acyl substituted nitrogen-containing heterocyclic compound and process for preparing aminal iron (II) complexes thereof

US9266982B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION · CN

Inventors

• Jun Liu · Dressendorf, DE
• Mingfang Zheng · Beijing, CN
• Weizhen Li · Beijing, CN
• Haiying Zhang · New York, US
• Huaijie Wang · Beijing, CN
• Yu Zhou · Shanghai, CN
• Tonglin Li · Beijing, CN
• Lan Zhao · Beijing, CN
• Hongfei Wu · Beijing, CN
• Mingjun Xie · Beijing, CN
• Chunhong Wu · Beijing, CN
• Zhiguang Jia · Beijing, CN
• Yanping Qi · Beijing, CN
• Jilong Wang · Beijing, CN

Key dates

• Filing date: Dec 1, 2011
• Grant date: Feb 23, 2016
• Expiry date: Dec 1, 2031

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01J2531/842
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

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.