Synthesis of Trifluoromethylated Dibenzoxepines via Palladium-Catalyzed Tandem C–O Bond Formation/C–H Arylation
作者:Zhi-Yi Zhao、Xing-Guo Zhang、Hai-Yong Tu
DOI:10.1021/acs.joc.3c01770
日期:2023.10.6
palladium-catalyzed cyclization reaction of phenols with trifluoromethyl-containing ortho-bromo-β-chlorostyrenes has been developed. In the presence of palladium(II) acetate, tricyclohexylphosphine, and cesium carbonate, a variety of 6-trifluoromethyldibenzo[b,d]oxepines were prepared in moderate to good yields through the tandem O-alkenylation of general phenols and subsequent C–H arylation.
已开发出钯催化的苯酚与含三氟甲基的邻-溴-β-氯苯乙烯的环化反应。在乙酸钯(II)、三环己基膦和碳酸铯存在下,通过一般酚类的串联 O-烯基化和随后的 C-H 芳基化,以中等至良好的产率制备了多种 6-三氟甲基二苯并[ b , d ]氧杂环己烷。