Cu-Catalyzed Cross-Dehydrogenative Coupling of Heteroaryl C(sp<sup>2</sup>)–H and Tertiary C(sp<sup>3</sup>)–H Bonds for the Construction of All-Carbon Triaryl Quaternary Centers
作者:Zhi Tang、Zhili Liu、Zhou Tong、Zhihui Xu、Chak-Tong Au、Renhua Qiu、Nobuaki Kambe
DOI:10.1021/acs.orglett.9b01755
日期:2019.7.5
A Cu-catalyzed protocol for cross-dehydrogenative coupling of benzofuranones with quinolines, indoles, carbazoles, and thiophene, which furnishes highly functionalized 3,3-diaryl benzofuranones bearing a three aryl quaternary carbon center at the C3 position in good yields, has been developed. A radical mechanism is proposed.
已开发出一种铜催化的苯并呋喃酮与喹啉,吲哚,咔唑和噻吩的交叉脱氢偶联方案,该方案可提供高产率的高官能度3,3-二芳基苯并呋喃酮,其在C3位置带有三个芳基季碳中心,收率很高。 。提出了一种激进的机制。