Unlock instant, AI-driven research and patent intelligence for your innovation.

Aromatic aza allyl organic zinc compound and synthetic method thereof

A technology of heteroallyl and synthesis method, applied in the field of aromatic azaallyl organozinc compounds and synthesis thereof, can solve the problems of harsh synthesis conditions, complex synthesis methods, easy deactivation and the like, and achieves mild and good reaction conditions. Catalytic effect, simple step effect

Inactive Publication Date: 2011-04-06
SHANXI UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such catalysts have the disadvantages of scarcity of transition metal resources, harsh storage conditions, easy deactivation, harsh synthesis conditions, complex synthesis methods, and unsuitable preparation of raw materials.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Aromatic aza allyl organic zinc compound and synthetic method thereof
  • Aromatic aza allyl organic zinc compound and synthetic method thereof
  • Aromatic aza allyl organic zinc compound and synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1, the synthesis and characterization of the aromatic azaallyl-containing organozinc compound of the present invention

[0022] (1) Under the protection of nitrogen and ice-water bath, respectively add 0.98g (10mmol) benzyllithium and 1.3ml (10mmol) trimethylchlorosilane to about 30ml n-hexane in turn, stir, naturally warm up to room temperature, keep Stir the reaction for 15 hours, filter the precipitated lithium chloride, and remove the solvent with a vacuum pump to obtain liquid α-(trimethylsilyl)toluene. α-(trimethylsilyl)toluene can be purified by vacuum distillation;

[0023] (2) Under the protection of nitrogen and ice-water bath, 1.71g (10mmol) α-(trimethylsilyl)toluene, 5.6ml1.8M n-butyllithium solution and 1.5ml (10mmol)Me 2 NCH 2 CH 2 NMe 2 (commonly known as tetramethylethylenediamine, lithium salt depolymerization agent) sequentially added to about 30ml of n-hexane, stirred, naturally warmed to room temperature, kept stirring for 15 hours to obt...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an aromatic aza allyl organo zinc compound. The method for synthesizing the compound adopts alpha-(trimethylsilyl) benzyl lithium to carry out addition reaction with tert-butyronitrile, and the generated aromatic aza allyl lithium is then reacted with anhydrous ZnCl2 to generate an object compound. The compound has ideal catalysis effect during making polylactic acid through lactide ring-opening polymerization. The synthesis method has moderate reaction conditions and simple steps, and is suitable for industrialized production.

Description

technical field [0001] The invention relates to a class of zinc organic compounds, in particular to an aromatic azaallyl organic zinc compound and a synthesis method thereof. Background technique [0002] With the increasingly serious environmental problems, the search for new biodegradable materials has attracted more and more attention. Polylactide is a synthetic polymer material with good biocompatibility and biodegradability. It is widely used in drug sustained-release capsules, Surgical sutures, orthopedic internal fixation materials, etc. Polylactic acid can be synthesized in two ways: one is the direct polycondensation of lactic acid monomers, but this method is difficult to prepare polymers with relatively high molecular weight; the other is the ring-opening polymerization of lactide, that is, lactide is first synthesized from lactic acid (3 , 6-dimethyl-1,4-dioxane-2,5-dione), and then obtain a polymer by ring-opening polymerization. The catalysts currently used ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07F7/10C07F3/06
Inventor 童红波刘滇生员海燕
Owner SHANXI UNIV