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
Cyclic urea derivatives, preparation thereof and pharmaceutical use thereof as kinase inhibitors
申请人:Aventis Pharma S.A.
公开号:US07935819B2
公开(公告)日:2011-05-03
Compounds of formula (I):
wherein Ra, Rb, R, X1 and X2 are as defined in the disclosure, pharmaceutical compositions comprising said compounds, processes for making and methods of using the same are provided.