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

Diamine-boric acid ester complex as well as preparation method and application thereof

A technology of borate and complexes, which is applied in the field of bisamine-boronate complexes and their preparation, and can solve problems such as poor spatial discrimination ability

Pending Publication Date: 2021-12-21
PEKING UNIV +1
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are still many limitations in the existing catalysts: one is that most of the CBS catalysts catalyze endo-selective products; Selective and regioselective Diels-Alder reactions, CBS catalysts Diels-Alder reactions for such compounds as substrates are mostly limited to substrates with additional symmetry, such as benzoquinones with no substituents or symmetrical substituents Substrates, etc., when activating 1,2-double-activated dienophiles, the spatial discrimination ability is poor, so that the 1,2-double-activated dienophiles that are closer to the environment cannot be selectively coordinated (such as p-formyl and acetyl can not be distinguished)

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
  • Diamine-boric acid ester complex as well as preparation method and application thereof
  • Diamine-boric acid ester complex as well as preparation method and application thereof
  • Diamine-boric acid ester complex as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0069] The bisamine-boronate complex of the present invention and its preparation method and application will be further described in detail below in conjunction with specific examples. The present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0070]Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention.

[0071] the term

[0072] Unless otherwise stated or contradictory, terms and phrases used herein have the following meanings:

[0073] In this a...

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 relates to a diamine-boric acid ester complex as well as a preparation method and application thereof. The diamine-boric acid ester complex or an enantiomer thereof has structural characteristics as shown in a general formula (5) which is described in the specification, can be used as a catalyst ligand to catalyze Diels-Alder reaction with high enantioselectivity, diastereoselectivity or regioselectivity, and has relatively high selectivity of exo to endo.

Description

technical field [0001] The invention relates to the technical field of organic synthesis, in particular to a bisamine-boronate complex and its preparation method and application. Background technique [0002] Since Otto Diels and his graduate student Kurt Alder discovered the Diels-Alder reaction in 1927 and determined the structure of the reaction product, the Diels-Alder reaction has been widely concerned by organic chemists. With the gradual deepening of organic chemists' understanding of the mechanism and characteristics of the Diels-Alder reaction, it has gradually become the most efficient and controllable stereoselective C-C bond formation reaction in organic synthetic chemical reactions. The high efficiency of the six-membered ring system makes it a key step in many classic natural product synthesis routes. At the same time, based on the need for asymmetric synthesis, many strategies to obtain asymmetric Diels-Alder reaction products have been developed. In recent ...

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 Applications(China)
IPC IPC(8): C07F5/02B01J31/02B01J31/26C07B37/12C07B53/00C07C45/69C07C67/347C07D209/48C07F7/18
CPCC07F5/02B01J31/0275B01J31/26B01J31/0227B01J31/0235C07C67/347C07F7/1892C07D209/48C07C45/69C07B37/12C07B53/00B01J2231/326C07C2601/16C07C2602/44C07C2602/42C07B2200/07C07C69/757C07C47/42
Inventor 杨震陈家华李元鹤张素蕾
Owner PEKING UNIV