Potassium Acetate-Catalyzed Double Decarboxylative Transannulation To Access Highly Functionalized Pyrroles
作者:Jun-Kuan Li、Biying Zhou、Yu-Chen Tian、Chunman Jia、Xiao-Song Xue、Fa-Guang Zhang、Jun-An Ma
DOI:10.1021/acs.orglett.0c03621
日期:2020.12.18
remodeling by utilizing CO2 moiety as tracelessactivating and directinggroups in both reaction partners. The synthetic value is evidenced by the rapid preparation of a broad spectrum of highly functionalized 3-carbamoyl-4-aryl pyrroles in good to excellent yields with exclusive regio-control, including the important Atorvastatin core.
Regioselective Decarboxylative Cycloaddition Route to Fully Substituted 3‐CF
<sub>3</sub>
‐Pyrazoles from Nitrilimines and Isoxazolidinediones
作者:Yu‐Chen Tian、Jun‐Kuan Li、Fa‐Guang Zhang、Jun‐An Ma
DOI:10.1002/adsc.202100091
日期:2021.4.13
1,4‐Diaryl‐5‐carboxamido substituted 3‐trifluoromethylpyrazoles are obtained with exclusive regioselectivity under transition‐metal‐free conditions. This decarboxylative [3+2] cycloaddition protocol was enabled by employing trifluoromethyl nitrilimines as 1,3‐dipoles, and isoxazolidinediones as CO2‐masked alkynyl dipolarophiles. The applicability of this method is further manifested by its compatibility