Oxygenation reactions with molecular oxygen (O2) as the oxygen source provides a green and straightforward strategy for the construction of O‐containing compounds. Demonstrated here is a novel N‐heterocyclic carbene (NHC) catalyzed oxidative transformation of simple and readily available organic halides into valuable esters through the incorporation of O‐atomsfromO2. Mechanistic studies prove that
Palladium-Catalyzed Silane/Siloxane Reductions in the One-Pot Conversion of Nitro Compounds into Their Amines, Hydroxylamines, Amides, Sulfonamides, and Carbamates
作者:Robert Maleczka、Ronald Rahaim
DOI:10.1055/s-2006-950231
日期:——
A combination of palladium(II) acetate, aqueous potassi- um fluoride, and polymethylhydrosiloxane (PMHS) facilitates the room-temperature reduction of aromatic nitro compounds to anilines. These reactions tend to be quick (30 min), high-yielding, and tolerate a range of other functional groups. Replacement of PMHS/KF with triethylsilane allows for the reduction of aliphatic nitro compounds to their