Dioxygen-Promoted Pd-Catalyzed Aminocarbonylation of Organoboronic Acids with Amines and CO: A Direct Approach to Tertiary Amides
作者:Long Ren、Xinwei Li、Ning Jiao
DOI:10.1021/acs.orglett.6b02913
日期:2016.11.18
A direct approach from organoboronic acids and amines to tertiary amides via Pd-catalyzed aerobic aminocarbonylation has been developed. The presence of O2 significantly promotes the efficiency of this transformation. This method uses commercially available organoboronic acids and cheap CO and O2 (1 atm), which renders amides an easy synthesis with broad substrate scope and high functional group tolerance
Deoxygenative Cross‐Coupling of Aromatic Amides with Polyfluoroarenes
作者:Youliang He、Yuxiao Wang、Shi‐Jun Li、Yu Lan、Xiaoming Wang
DOI:10.1002/anie.202115497
日期:2022.3.7
An attractive deoxygenative cross-coupling of amides with polyfluoroarenes was successfully achieved. Aromaticamides act as readily available carbene precursors through a Sm/SmI2-mediated deoxygenation process, and the insertion of the carbene into the C−H bond of polyfluoroarene affords architecturally complex and functionally diverse α-polyfluoroaryl amines in a single step.
A protocol for the synthesis of α-tertiary amines was developed by iterative addition of carbon nucleophiles to N,N-dialkyl carboxamides. Nucleophilic 1,2-addition of organolithium reagents to carboxamides forms anionic tetrahedral carbinolamine (hemiaminal) intermediates, which are subsequently treated with bromotrimethylsilane (Me3SiBr) followed by organomagnesium (Grignard) reagents, organolithium