A new method has been developed for the rhodium-catalyzedcross-coupling of aryl carbamates with organoboron reagents. The use of an NHC ligand bearing a 2-adamantyl group, i.e., I(2-Ad), is essential to the success of the reaction. The reaction involves the rhodium-mediated activation of the relatively inert C(aryl)-O bond of aryl carbamates.
Chemo‐ and Regioselective Anionic Fries Rearrangement Promoted by Lithium Amides under Aerobic Conditions in Sustainable Reaction Media
作者:Simone Ghinato、Federica De Nardi、Paola Bolzoni、Achille Antenucci、Marco Blangetti、Cristina Prandi
DOI:10.1002/chem.202201154
日期:2022.7
A simple, scalable, and sustainable access to salicylamides from O-aryl carbamates was achieved using lithiumamides as easy-to-handle metalating agents under bench-type aerobic conditions. Tunable regioselective ortho- and lateral metalations in eco-friendly cyclopentyl methyl ether (CPME) allow fast anionic migrations under air, with an unexpected beneficial contribution from biorenewable protic