Boron-Promoted Co-Catalyzed N-Methylation of Secondary Aromatic Amines with CO2 and H2

被引：1

作者：

Shi, Qin ^{[1
,2
]}

Li, Zhen ^{[1
]}

He, Lin ^{[1
]}

Li, Yudong ^{[1
]}

Li, Yuehui ^{[3
]}

机构：

[1] Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Low Carbon Catalysis & Carbon Dioxid, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[3] Shanghai Jiao Tong Univ, Coll Smart Energy, Shanghai 200240, Peoples R China

来源：

CHINESE JOURNAL OF ORGANIC CHEMISTRY | 2024年 / 44卷 / 10期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

CO2/H2; N-; methylation; cobalt catalysis; CARBON-DIOXIDE; FORMYLATION; AMIDES; DERIVATIVES; BURST; ARYL;

D O I：

10.6023/cjoc202405049

中图分类号：

O62 [有机化学];

学科分类号：

070303 ; 081704 ;

摘要：

Development of catalytic methods using CO2/H-2 as methylating reagent for selective methylation of amines is highly attractive. Herein, the methylation of N-H bond via boron promoted activation of Co-formate intermediates is reported. This catalytic system showed excellent functional group tolerance with high catalytic activity, and a series of methylated products were acquired in moderate to excellent yields under mild conditions ( e.g. 80 degrees C or 60 degrees C ). It was inferred that imine complex C was the crucial intermediate formed via dehydration of species B , providing efficient C-N coupling for the selective N- methylation of secondary aromatic amines with CO2/H-2.

引用

页码：3233 / 3240

页数：8

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