Aerobic oxidation of lignin model compounds catalyzed by the iron or copper/ABNO at room temperature with ambient air as the oxidant

IF 3.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Molecular Catalysis Pub Date : 2024-09-28 DOI:10.1016/j.mcat.2024.114565

Shaowei Liu, Shuxiao Huo, Xiangzhu Yu, Meng Miao, Lianyue Wang

引用次数: 0

Abstract

Herein, we report a simple, efficient, and mild Fe(NO₃)₃·9H₂O or Cu(NO₃)₂·3H₂O/ABNO- catalytic system (ABNO=9-azabicyclo[3.3.1]nonane-N-oxyl), which was capable of oxidizing β-O-4 alcohol lignin model compounds to ketones at room temperature using ambient air as the oxidant. This versatile catalytic system exhibits excellent substrate scope and the corresponding products were obtained in good to excellent yields. The kinetic isotope effect shows that the CH bond breaking is the rate-determining step of the reaction. The experiment of gram scale proves that the catalytic system has good practicability.

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铁或铜/ABNO 在室温下以环境空气为氧化剂催化木质素模型化合物的有氧氧化作用

在此，我们报告了一种简单、高效、温和的 Fe(NO3)3-9H2O 或 Cu(NO3)2-3H2O/ABNO- 催化体系（ABNO=9-氮杂双环[3.3.1]壬烷-N-氧代），该体系能够在室温下以环境空气为氧化剂将 β-O-4 醇木质素模型化合物氧化为酮。这种多功能催化体系具有极佳的底物范围，并能以良好甚至极佳的收率获得相应的产物。动力学同位素效应表明，CH 键断裂是反应的决定性步骤。克级实验证明该催化体系具有良好的实用性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Molecular Catalysis Chemical Engineering-Process Chemistry and Technology

CiteScore

6.90

自引率

10.90%

发文量

700

审稿时长

40 days

期刊介绍： Molecular Catalysis publishes full papers that are original, rigorous, and scholarly contributions examining the molecular and atomic aspects of catalytic activation and reaction mechanisms. The fields covered are: Heterogeneous catalysis including immobilized molecular catalysts Homogeneous catalysis including organocatalysis, organometallic catalysis and biocatalysis Photo- and electrochemistry Theoretical aspects of catalysis analyzed by computational methods