Chan‐Evans‐Lam C−N Coupling Promoted by a Dinuclear Positively Charged Cu(II) Complex. Catalytic Performance and Some Evidence for the Mechanism of CEL Reaction Obviating Cu(III)/Cu(I) Catalytic Cycle
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DOI: 10.1002/cctc.202000212
Abstract: In the present study, we report the synthesis of a series of copper(II) complexes with a wide range of ligands and their testing in the copper catalyzed Chan‐Evans‐Lam (CEL) coupling of aniline and phenylboronic acid.… read more here.
Keywords: lam coupling; mechanism; evans lam; reaction ... See more keywords
Copper-Catalyzed Reactions of Alkenyl Boronic Esters via Chan-Evans-Lam Coupling/Annulation Cascades: Substrate Selective Synthesis of Dihydroquinazolin-4-ones and Polysubstituted Quinolines.
Sign Up to like & getrecommendations! Published in 2022 at "Organic letters"
DOI: 10.1021/acs.orglett.2c02522
Abstract: Copper-catalyzed cascade cyclization reactions between alkenyl boronic esters and N-H-based nucleophiles have been established, providing new approaches for one-pot assembly of azacycles. Following the Chan-Evans-Lam C-N couplings, the cyclization processes occur via divergent pathways based… read more here.
Keywords: reactions alkenyl; boronic esters; evans lam; alkenyl boronic ... See more keywords
Construction of 1-Heteroaryl-3-azabicyclo[3.1.0]hexanes by sp3-sp2 Suzuki-Miyaura and Chan-Evans-Lam Coupling Reactions of Tertiary Trifluoroborates.
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DOI: 10.1021/acs.orglett.7b01097
Abstract: Compounds that contain the 1-heteroaryl-3-azabicyclo[3.1.0]hexane architecture are of particular interest to the pharmaceutical industry yet remain a challenge to synthesize. We report herein an expedient and modular approach to the synthesis of 1-heteroaryl-3-azabicyclo[3.1.0]hexanes by Suzuki-Miyaura… read more here.
Keywords: azabicyclo hexanes; azabicyclo; heteroaryl azabicyclo; suzuki miyaura ... See more keywords
Chemoselective N-arylation of aminobenzene sulfonamides via copper catalysed Chan–Evans–Lam reactions
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DOI: 10.1039/c8qo01313f
Abstract: Chemoselective N-arylation of unprotected dinucleophilic aminobenzene sulfonamides was achieved via Cu-catalysed Chan–Evans–Lam cross-coupling with aryl boronic acids. read more here.
Keywords: catalysed chan; evans lam; chan evans; aminobenzene sulfonamides ... See more keywords
Replacing sulfonate by carboxylate: application of pyridyliminocarboxylato copper(II) complexes in rac-lactide polymerization and Chan–Evans–Lam coupling
Sign Up to like & getrecommendations! Published in 2019 at "Canadian Journal of Chemistry"
DOI: 10.1139/cjc-2018-0402
Abstract: Copper(II) complexes carrying pyridylmethyleneaminobenzoate or –propanoate ligands, LCuX, were prepared in one-pot reactions from pyridinecarboxaldehyde, aminobenzoic acid or β-alanine, and CuX2 (X = Cl, NO3, OAc, or OTf). All complexes were characterized by single-crystal X-ray… read more here.
Keywords: copper complexes; chan evans; lactide polymerization; polymerization ... See more keywords
Synthesis of 10-O-aryl-substituted berberine derivatives by Chan–Evans–Lam coupling and investigation of their DNA-binding properties
Sign Up to like & getrecommendations! Published in 2021 at "Beilstein Journal of Organic Chemistry"
DOI: 10.3762/bjoc.17.81
Abstract: Eleven novel 10-O-aryl-substituted berberrubine and berberine derivatives were synthesized by the Cu2+-catalyzed Chan–Evans–Lam coupling of berberrubine with arylboronic acids and subsequent 9-O-methylation. The reaction is likely introduced by the Cu2+-induced demethylation of berberrubine and subsequent… read more here.
Keywords: aryl substituted; lam coupling; dna; evans lam ... See more keywords