期刊
ORGANIC CHEMISTRY FRONTIERS
卷 8, 期 21, 页码 5962-5967出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1qo00945a
关键词
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资金
- National Natural Science Foundation of China [22001049]
- Guangxi Science & Technology Base and Talent Special [AD19245095]
- Guangxi Natural Science Foundation [2020GXNSFBA297003]
- Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials [EMFM20181108]
An efficient metal-catalyzed tandem reaction was developed for the synthesis of unsymmetrical azobenzenes, eliminating the need for extra deprotection steps. Additionally, a novel three-component reaction process was discovered to assemble azobenzenes in good yields.
An efficient, one-pot, and low-cost metal-catalyzed tandem Chan-Lam coupling/deprotection/oxidation reaction to access unsymmetrical azobenzenes was developed. The phthaloyl group was automatically released from the rest of the molecule under the conditions of the basic catalytic system of this protocol, without extra steps for deprotection. A variety of azobenzenes were easily obtained using this C-N coupling strategy, without precautions against generating undesired azo by-products. Moreover, an unusual, three-component and domino Ullmann/Chan-Lam/deprotection/oxidation reaction proceeded smoothly to assemble azobenzenes in good yields, where phthalic hydrazide served as a source of N2.
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