Ruthenium-Catalyzed Urea Synthesis Using Methanol as the C1 Source
作者:Seung Hyo Kim、Soon Hyeok Hong
DOI:10.1021/acs.orglett.5b03328
日期:2016.1.15
An unprecedented protocol for urea synthesis directly from methanol and amine was accomplished. The reaction is highly atom-economical, producing hydrogen as the sole byproduct. Commercially available ruthenium pincer complexes were used as catalysts. In addition, no additive, such as a base, oxidant, or hydrogen acceptor, was required. Furthermore, unsymmetrical ureaderivatives were successfully
A solvent extraction composition is comprised of one or more orthohydroxyarylaldoximes and one or more othohydroxyarylketoximes, and one or more equilibrium modifiers in an amount providing a degree of modification of the orthohydroxyarylaldoximes from about 0.2 to 0.61