Direct C–H Functionalization of Phenanthrolines: Metal- and Light-Free Dicarbamoylations
作者:David T. Mooney、Benjamin D. T. Donkin、Nemrud Demirel、Peter R. Moore、Ai-Lan Lee
DOI:10.1021/acs.joc.1c02425
日期:2021.12.3
A direct method for C–H dicarbamoylations of phenanthrolines has been developed, which is capable of directly installing primary, secondary as well as tertiary amides. This is a significant improvement on the previous direct method, which was limited to primary amides. The metal-, light-, and catalyst-free Minisci-type reaction is cheap, operationally simple, and scalable. We demonstrate that the step
PEG-grafted nitrogen ligands were synthesized. The corresponding copper complexes serve as metallomicellar nanoreactors for the aerobic tandem desilylation/Glaser coupling of TMS-protected alkynes in water. The protocol is also suitable for base-free homocoupling of terminal alkynes. The metallomicellar catalyst could be recycled 5 times with minor loss of reactivity.
periphery of 1,10-phenanthroline (B2phen) or 2,2′-bipyridine (B2bpy) in a tricarbonylrhenium(I) diiminecomplex (fac-[Re(CO)3(B2phen)Br] = ReB2phen or fac-[Re(CO)3(B2bpy)Br] = ReB2bpy) resulted in unique redox, spectroscopic, and photophysicalproperties of the complex. In particular, the presence of the two arylborane units in the complex can enhance its metal-to-ligand CT absorption intensity in the visible