Copper-Catalyzed Three-Component Domino Cyclization for the Synthesis of 4-Aryl-5-(arythio)-2-(trifluoromethyl)oxazoles
作者:Fuhong Xiao、Shanshan Yuan、Huawen Huang、Feng Zhang、Guo-Jun Deng
DOI:10.1021/acs.orglett.9b02934
日期:2019.11.1
A copper-catalyzed oxidative cyclization of oxime, arylthiol, and trifluoroacetic anhydride for the construction of trisubstituted oxazoles has been developed. This transformation combines N–O bond cleavage, C–H functionalization, and intramolecular annulation, providing a practical protocol for the introduction of a trifluoromethyl (−CF3) group at oxazole rings.
已开发了用于催化三取代恶唑的肟,芳基硫醇和三氟乙酸酐的铜催化氧化环化反应。这种转化结合了N-O键断裂,CH-H功能化和分子内环化,为在恶唑环上引入三氟甲基(-CF 3)基团提供了实用的方案。