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A Pd-catalyzed method based on the use of a molecular tether is described for olefin difunctionalization. Enabled by an easily introduced trifluoroacetaldehyde-derived tether, a simultaneous introduction of oxygen and nitrogen heteroatoms across unsaturated carbon-carbon bonds was achieved under oxidative conditions, most probably via high-valent Pd inter-mediates. Good yields and high diastereoselectivity were obtained with aryl-substituted alkenes, whereas nonterminal alkyl-substituted olefins gave aza-Heck products. Tether cleavage under mild conditions fast access to functionalized alcohols.
Bastian Antoine Rodolphe Claude Muriel
Paul Joseph Dyson, Mingyang Liu