期刊
JOURNAL OF ORGANIC CHEMISTRY
卷 76, 期 11, 页码 4692-4696出版社
AMER CHEMICAL SOC
DOI: 10.1021/jo200317f
关键词
-
资金
- National Natural Science Foundation of China [21002039, 20972057]
In this paper, a novel and applicable synthesis of benzofurans from commercially available phenols and propiolate through the direct oxidative cyclization has been developed. In the presence of Pd(OAc)(2)/PPh3 and CF3CO2Ag, (E)-type 3-phenoxyacrylates underwent reaction smoothly to generate the corresponding benzofurans in good yields in benzene at 110 degrees C under the air pressure. In addition, this transformation of phenols into benzofurans can also be carried out in one pot. The process was simple and efficient. A tentative mechanism of palladium-catalyzed oxidative cyclization of 3-phenoxyacrylates was proposed.
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