Phosphine-Free Well-Defined Mn(I) Complex-Catalyzed Synthesis of Amine, Imine, and 2,3-Dihydro-1<i>H</i>-perimidine via Hydrogen Autotransfer or Acceptorless Dehydrogenative Coupling of Amine and Alcohol
report the synthesis of amines/imines directly from alcohol and amines via hydrogen autotransfer or acceptorless dehydrogenation catalyzed by well-defined phosphine-free Mn complexes. Both imines and amines can be obtained from the same set of alcohols and amines using the same catalyst, only by tuning the reaction conditions. The amount and nature of the base are found to be a highly important aspect for
A novel catalyst‐free mechanochemical protocol for the synthesis of 2,3‐dihydro‐1<i>H</i>‐perimidines
作者:Nissy Ann Harry、Sankaran Radhika、Mohan Neetha、Gopinathan Anilkumar
DOI:10.1002/jhet.3880
日期:2020.4
A rapid, efficient, and green grinding assisted method for the synthesis of 2,3‐dihydro‐1H‐perimidines has been developed. 1,8‐Diaminonaphthalene and aldehydes were ground using mortar and pestle for 5 minutes affording the product in moderate to excellent yields. The methodology minimises the use of conventional workup and column chromatographic techniques.
the coordination behaviours of perimidine ligands incorporating fused N-donor heterocyclics towards rhenium in its oxidation states +I and +V are explored. The equimolar coordination reactions of 2-(benzothiazole)-2,3-dihydro-1H-perimidine (bzpm) and 2,3-dihydro-2-(pyridine)-1H-perimidine (H2pypm) with [Re(CO)5Br] afforded the rhenium(I) complexes: fac-[Re(CO)3(bzpm)Br](1) and fac-[Re(CO)3(pypm)Br](2)