Divergent Synthesis of α-Fluorinated Carbonyl and Carboxyl Derivatives by Double Electrophilic Activation of Amides
作者:Amaury Dubart、Gwilherm Evano
DOI:10.1021/acs.orglett.1c03450
日期:2021.11.19
entry to α-fluorinated carbonyl and carboxyl derivatives is reported. Upon activation of amides with triflic anhydride and a 2-halo-pyridine and subsequent trapping of the resulting keteniminium ions with nucleophiles followed by a second electrophilic activation with NFSI and final hydrolysis, a range of amides can be transformed to α-fluorinated ketones, esters, and amides under mild conditions. Moreover
Charge-Transfer Complex Promoted C–N Bond Activation for Ni-Catalyzed Carbonylation
作者:Hui Yu、Bao Gao、Bin Hu、Hanmin Huang
DOI:10.1021/acs.orglett.7b01488
日期:2017.7.7
A new strategy was developed for activation of C–N bond via formation of an amine–I2 charge-transfer complex, which facilitates the inert C–N bond activation via oxidative addition with Ni(0). This strategy has been successfully applied in the Ni-catalyzed carbonylation of benzylamines via direct insertion of CO into the C–N bond, which provided a straightforward and rapid approach to arylacetamides