β-Aminoethyltrifluoroborates: Efficient Aminoethylations via Suzuki−Miyaura Cross-Coupling
摘要:
A set of phenethylamines has been successfully prepared via Suzuki-Miyaura cross-coupling of diverse potassium beta-aminoethyltrifluoroborates with aryl halides. The potassium beta-aminoethyltrifluoroborates were easily prepared via hydroboration of enamine and enamide precursors.
Selective Coupling of 1,2‐Bis‐Boronic Esters at the more Substituted Site through Visible‐Light Activation of Electron Donor–Acceptor Complexes
作者:Hui Wang、Jingjing Wu、Adam Noble、Varinder K. Aggarwal
DOI:10.1002/anie.202202061
日期:2022.4.25
monofunctionalization of 1,2-bis-boronic esters was achieved by using a catalyst-free photoinduced coupling with (hetero)aryl nitriles. The reaction proceeds throughelectrondonor–acceptor (EDA) complex-driven deboronation and radical 1,2-boron shift, giving β-aryl primary boronicester products. The reaction also works with primary, secondary, and tertiary boronicesters.