Cu-catalyzed <i>N</i>-3-Arylation of Hydantoins Using Diaryliodonium Salts
作者:Linn Neerbye Berntsen、Ainara Nova、David S. Wragg、Alexander H. Sandtorv
DOI:10.1021/acs.orglett.0c00642
日期:2020.4.3
A general Cu-catalyzed, regioselective method for the N-3-arylation of hydantoins is described. The protocol utilizes aryl(trimethoxyphenyl)iodonium tosylate as the arylating agent in the presence of triethylamine and a catalytic amount of a simple Cu-salt. The method is compatible with structurally diverse hydantoins and operates well with neutral aryl groups or aryl groups bearing weakly donating/withdrawing
A set of two broadly applicable procedures for the N-arylation of hydantoins is reported. The first one relies on the use of stoichiometric copper(I) oxide under ligand- and base-free conditions and enables a clean regioselective arylation at the N3 nitrogen atom, while the second one is based on the use of catalytic copper(I) iodide and trans-N,N′-dimethylcyclohexane-1,2-diamine and promotes arylation
Use of the Hydantoin Directing Group in Ruthenium(II)-Catalyzed C–H Functionalization
作者:Jamie A. Leitch、Hans P. Cook、Yunas Bhonoah、Christopher G. Frost
DOI:10.1021/acs.joc.6b02073
日期:2016.10.21
Ruthenium(II)-catalyzed C–H functionalization of N-arylhydantoins is herein described. The biologically relevant hydantoin (imidazolidinedione) heterocycle functions as a weakly coordinating directing group in a C–H alkenylation reaction. The reaction gave a wide scope of 23 examples with yields up to 94% in the green solvent 2-MeTHF. Functionalization of API nilutamide (antiandrogen) is also reported
Cu-catalyzed C(sp<sup>2</sup>)–N-bond coupling of boronic acids and cyclic imides
作者:Linn Neerbye Berntsen、Thomas Nordbø Solvi、Kristian Sørnes、David S. Wragg、Alexander H. Sandtorv
DOI:10.1039/d1cc04356k
日期:——
Cu-t the Ru. A general Cu-catalyzed method for (E)-enimide-formation is described. The process is mild and practical, and couples cyclic imides and alkenylboronic acids. The method can also be used to prepare N-arylimides.