One-pot triflic anhydride-mediated synthesis of 1,2-disubstituted 2-imidazolines from N-(2-haloethyl)amides and amines
作者:Alyssa A. Ellsworth、Christina L. Magyar、Grace E. Hubbell、Chelsea C. Theisen、Daniel Holmes、R. Adam Mosey
DOI:10.1016/j.tet.2016.08.040
日期:2016.10
A one-potsynthesis of 1,2-disubstituted 2-imidazolines from N-(2-haloethyl)amides has been developed. The reaction affords high yields of diverse 1,2-disubstituted 2-imidazolines from triflic anhydride-mediated dehydration of amides followed by installation of a primary amine.
NHC-amide donor ligands in rhodium complexes: Syntheses and characterisation
作者:Stefan Warsink、Johan A. Venter、Andreas Roodt
DOI:10.1016/j.jorganchem.2014.10.020
日期:2015.1
Rhodium(I) complexes bearing amide-functionalised NHC ligands were synthesized in high yields through various synthetic routes and from different metal precursors, showing the versatility of such systems. By changing the ancillary ligands on the rhodium from cyclooctadiene to carbonyls the coordination behaviour of the NHC-amide ligand could be influenced. When a more basic precursor was employed for complexation, bidentate behaviour with the amide in an anionic mode was observed. All reported complexes are synthesized in high yields and under ambient conditions, which shows their robustness. The monodentate rhodium(I) biscarbonyl NHC complexes were shown to be able to activate iodomethane. (C) 2014 Elsevier B.V. All rights reserved.