Enantioselective Copper-Catalyzed Intramolecular Phenolic OH Bond Insertion: Synthesis of Chiral 2-Carboxy Dihydrobenzofurans, Dihydrobenzopyrans, and Tetrahydrobenzooxepines
作者:Xiao-Guang Song、Shou-Fei Zhu、Xiu-Lan Xie、Qi-Lin Zhou
DOI:10.1002/anie.201209455
日期:2013.2.25
Efficient: A copper‐catalyzed enantioselective intramolecular insertion of carbenoids into phenolic OH bonds has been developed. This method can be used for the synthesis of the title compounds in high yields and excellent enantioselectivities under mild and neutral conditions (see scheme). NaBArF=sodium tetrakis[3,5‐bis(trifluoromethyl)phenyl]borate.
有效:一个铜催化卡宾成酚类的O对映选择性分子内插入 H键已经研制成功。该方法可用于在温和和中性条件下以高收率和出色的对映选择性合成标题化合物(参见方案)。NaBAr F =四[3,5-双(三氟甲基)苯基]硼酸钠。