Ni-Catalyzed cross-coupling reactions of <i>N</i>-acylpyrrole-type amides with organoboron reagents
作者:Pei-Qiang Huang、Hang Chen
DOI:10.1039/c7cc07457c
日期:——
to ketones is highly desirable yet challenging in organic synthesis. We herein report the first Ni/bis-NHC-catalyzed cross-coupling of N-acylpyrrole-type amides with arylboronic esters to obtain diarylketones. This method is facilitated by a new chelating bis-NHC ligand. The reaction tolerates diverse functional groups on both arylamide and arylboronic ester partners including sensitive ester and ketone
α‐arylation of enolates have been introduced. Despite the popularity and utility of these reactions, there remains room for improvement (reduced costs, elimination of transition metals and specialized ligands). Herein is reported a general, scalable and green method for aroylation of simple diarylmethane pronucleophiles through direct acyl C−N cleavage of N‐Bn−N‐Boc arylamides and N‐acylpyrroles under
A palladium-catalyzedsynthesis of acyl pyrroles from aryl and alkenyl iodides is reported. This carbonylative amination requires only atmospheric (balloon) pressure of carbon monoxide and proceeds with Pd(PPh3)4 and Pd-NHC catalysts. Aryl and heteroaryl iodides give the corresponding acyl pyrroles in good to excellent yields, while alkenyl iodides provide the corresponding acyl pyrroles in low to
Brønsted Base Prompted <i>sp</i><sup>3</sup> C–H Latent Nucleophiles to Access α-Branched Amines Bearing β-Carbonyl by Cleaving Amide and Ester Bonds
作者:Ramdas Sreedharan、Thirumanavelan Gandhi
DOI:10.1021/acs.joc.3c00455
日期:2023.7.7
substrate scope. The reaction is carried out with a repertoire of substrates under mild conditions and shows high functional group compatibility. Remarkably the reaction is amenable to organometallic ferrocenyl ester and indole methyl esters bearing an acidic NH moiety. Strikingly no trace of amidation product 8 is observed. In particular α-branched amines bearing β-carbonyl synthesized from indole methyl