Synthesis of Dibenzofurans by Cu-Catalyzed Deborylative Ring Contraction of Dibenzoxaborins
作者:Yuto Sumida、Ryu Harada、Tomoe Sumida、Kohei Johmoto、Hidehiro Uekusa、Takamitsu Hosoya
DOI:10.1021/acs.orglett.0c02584
日期:2020.8.21
dibenzoxaborins to dibenzofurans by deborylative ring contraction was achieved under mild conditions using a copper catalyst. The method showed a broad substrate scope enabling the preparation of various dibenzofurans, including those bearing a functional group. The ready availability of various dibenzoxaborins enhances the utility of this method, as demonstrated by the regiodivergent synthesis of dibenzofurans
使用铜催化剂,在温和的条件下,通过脱硼基环收缩将二苯并黄素有效转化为二苯并呋喃。该方法显示了广泛的底物范围,能够制备各种二苯并呋喃,包括带有官能团的二苯并呋喃。如二苯并呋喃的区域发散性合成所证明的,各种二苯并黄素的现成可用性增强了该方法的实用性。