Ligands for Migration Metal Catalysts

By providing a new hydrocarbon structure, the problem of selective control of precursor alkylation in the synthesis of NHCs ligands is solved, and the preparation of economical and synthetically feasible transition metal catalysts is achieved, and the efficiency and stability of the catalytic reaction are improved.

JP7664640B2Active Publication Date: 2025-04-18RUTGERS THE STATE UNIV
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Patent Information

Application Number
JP2022542195
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2020-01-08
Filing Date
2021-01-08
Publication Date
2025-04-18
Estimated Expiration
2041-01-08

AI Technical Summary

Technical Problem

In the prior art, the synthesis of N-heterocyclic carbenes (NHCs) ligands, especially the preparation of Dipp precursors of IPr, has problems with difficult-to-control alkylation selectivity, resulting in long and inflexible industrial routes.

Method used

A new compound structure is provided, including specific hydrocarbon groups and heterocyclic structures, for the formation of efficient transition metal catalysts. Through a specific synthetic route, this compound can effectively avoid the difficulty of selective control of alkylation of precursors.

Benefits of technology

The economical and synthetic feasible transition metal catalyst preparation is achieved, and the efficiency and stability of the catalytic reaction are improved.

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Abstract

Provided herein is a new class of highly sterically bulky and easily prepared N-heterocyclic carbene (NHC) ligands of Formula I, or salts, solvates, geometric isomers, or stereoisomers thereof. These ligands are readily synthetically accessible through cost-effective, modular alkylation of aniline, a commercially available industrial chemical. NHC ligands form effective catalysts with transition metals such as Pd. TIFF2023509961000062.tif181154
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Citation Information

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