Copper-catalyzed radical oxytrifluoromethylation of alkenyl oximes at ambient temperature
作者:Xi-Tao Li、Ling Lv、Qiang-Shuai Gu、Xin-Yuan Liu
DOI:10.1016/j.tet.2018.08.037
日期:2018.10
A mild and efficient copper-catalyzed radical oxytrifluoromethylation reaction of alkenyl oximes was successfully developed. The method provides a straightforward access to a wide range of CF3-containing isoxazolines in good to excellent yields. (C) 2018 Elsevier Ltd. All rights reserved.
Catalytic Enantioselective Iodoaminocyclization of Hydrazones
作者:Chandra Bhushan Tripathi、Santanu Mukherjee
DOI:10.1021/ol5013982
日期:2014.6.20
The first catalytic enantioselective iodoaminocyclization of beta,gamma-unsaturated hydrazones has been developed with the help of a trans-1,2-diaminocyclohexane-derived bifunctional thiourea catalyst and allows for the direct access to Delta(2)-pyrazolines containing a quaternary stereogenic center in high yield with good enantioselectivity (up to 95% yield and 95:5 er).