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2,3-diisopropyl-2.3-dicyano-diethyl succinate compound, preparation method and application thereof

A technology of cyanosuccinic acid diester and cyanobutylene diester, which is applied in the field of organic compounds and their preparation, can solve problems such as not being disclosed, and achieve the effect of improving the production technology level

Active Publication Date: 2010-08-25
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
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Problems solved by technology

Although by 2,3-dihydrocarbyl succinic acid can prepare 2,3-dihydrocarbyl succinic acid ester according to the esterification method of prior art, CN1313869A document does not disclose 2, the concrete of 3-diisopropyl succinic acid and its ester Preparation method (see Table A in this patent document)

Method used

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  • 2,3-diisopropyl-2.3-dicyano-diethyl succinate compound, preparation method and application thereof

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Abstract

The invention relates to a preparation method of 2,3-diisopropyl succinate and ester compound thereof, which comprises the steps of: carrying out an oxidative coupling reaction of a 3-methyl-2-cyano butyrate compound for preparing a 2,3-diisopropyl-2.3-dicyano-diethyl succinate compound; carrying out a hydrolysis reaction and a decarboxylation reaction for preparing the 2,3-diisopropyl succinate;and further esterifying for preparing the 2,3-diisopropyl diethyl succinate compound. An intermediate of the 2,3-diisopropyl-2.3-dicyano-diethyl succinate compound and the preparation method thereof are beneficial to commercially producing 2,3-diisopropyl succinic ester which is an internal electron donor compound used capable of being used for preparing a Ziegler-Natta polypropylene catalyst. The invention can be used for the technical field of petrochemical polypropylene.

Description

2,3-Diisopropyl-2,3-dicyanosuccinate diester compound and its preparation method and application technical field The present invention relates to an organic compound and a preparation method thereof, in particular to 2,3-diisopropyl-2,3-dicyanosuccinate diester compounds and a preparation method thereof and as an intermediate in the preparation of 2,3-di Application of isopropyl succinic acid. Background technique Searching for ideal electron donor compounds has always been a hot spot in the research of new polypropylene catalysts. The existing document CN1313869A discloses that 2,3-dihydrocarbyl succinate compounds are used as one of the catalyst components for the preparation of solid catalysts for olefin polymerization. Among them, 2,3-diisopropylsuccinate is a particularly preferred internal electron donor compound. The series of succinates are internal electron donors of Ziegler-Natta catalysts, which improve the ability of catalysts to control the relative molecula...

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Application Information

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IPC IPC(8): C07C255/22C07C253/30C07C55/02C07C51/09C07C51/08C07C51/38C07C69/34C07C67/08
Inventor 谢伦嘉冯再兴田宇赵思源亢宇孙竹芳
Owner CHINA PETROLEUM & CHEM CORP
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