<i>N</i>
<sup>1</sup>
‐ and
<i>N</i>
<sup>3</sup>
‐Arylations of Hydantoins Employing Diaryliodonium Salts
<i>via</i>
Copper(I) Catalysis at Room Temperature
reported employing diaryliodonium triflates as aryl source using a copper(I) catalyst. The developed protocol is performable at room temperature and easily scalable. The robustness is confirmed with a wide range of substrate studies of both hydantoins and diaryliodonium salts. Sterically complicated ortho‐substituted diaryliodonium salts are also compatible with the reaction protocol.
5-substituted hydantoins starting from various resins for solid-phase combinatorial chemistry has been developed. The hydantoins were synthesized from pre-loaded resins with amino acids via treatment with isocyanate or phenylisocyanate and subsequent intramolecular cyclization. Both reactions were performed under microwave irradiation. We studied the cyclative cleavage leading to hydantoin compounds dependent
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