equiv of chiral binol-derived organophosphoric acid and 1 equiv of Et2AlCl. In the presence of a catalytic amount of [4j]2Al(III)Cl complex (0.05 equiv), reaction between α-isocyanoacetamides (2) and aldehydes (3) afforded the corresponding 5-aminooxazoles (1) in good yields and enantioselectivities. Complex [4j]2Al(III)Cl isolated as a white solid displayed similar reactivity as that prepared in situ.
Aryl sulfonium salt electron donor-acceptor complexes for halogen atom transfer: Isocyanides as tunable coupling partners
作者:Huaibo Zhao、Valentina D. Cuomo、James A. Rossi-Ashton、David J. Procter
DOI:10.1016/j.chempr.2024.01.020
日期:2024.4
(electron donor-acceptor) complexes provides a mild platform for aryl-radical-mediated halogen atom transfer activation of a wide range of functionalized alkyl iodides, including tertiary alkyl iodides. Using an aryl sulfonium salt with carbonate as an inexpensive donor for EDA complex formation, the general reaction platform has been applied in a divergent, metal-free photochemical approach to nitriles