Pd(DPEPhos)Cl2-catalyzed Negishi cross-couplings for the formation of biaryl and diarylmethane phloroglucinol adducts
摘要:
Several functionalized biaryls and diarylmethanes containing the phloroglucinol subunit were synthesized in 55-85% yields using Negishi cross-couplings of 2,4,6-trimethoxyphenylzinc chloride with aryl and benzyl halides in the presence of catalytic quantities of Pd(DPEPhos)Cl-2. These simple to prepare couplings were generally complete in 1-24 h depending on the halide, and were applicable to aryl and benzyl halides containing both electron-donating and electron-withdrawing groups. (C) 2011 Elsevier Ltd. All rights reserved.
Pd-catalysed decarboxylative Suzuki reactions and orthogonal Cu-based O-arylation of aromatic carboxylic acids
作者:Jian-Jun Dai、Jing-Hui Liu、Dong-Fen Luo、Lei Liu
DOI:10.1039/c0cc04104a
日期:——
Pd-catalysed decarboxylative Suzuki reactions and orthogonal Cu-based O-arylation reactions of aromatic carboxylic acids are reported. The new reactions may provide alternative routes for the synthesis of some biaryls and aromatic carboxylic esters.
Synthesis of NHC Ligands Containing a Sulfoxide Moiety and Their Use in Cross-Coupling via a Au(I)/(III) Catalytic Cycle
作者:Takanori Shibata、Rikako Nagai、Sari Okazaki、Shun Nishibe、Mamoru Ito
DOI:10.1246/bcsj.20220013
日期:2022.4.15
We designed and synthesized a new series of NHCs with a sulfoxide moiety as a hemilabile ligand. We investigated the catalytic activities of Au(I)-NHC complexes in the strong oxidant-free cross-coupling of iodoarenes with 1,3,5-trimethoxybenzene. We ascertained that the sulfoxide moiety is critical for the Au(I)/(III) catalytic cycle.
作者:Gerber, Roman、Blacque, Olivier、Frech, Christian M.
DOI:10.1039/c1dt90189c
日期:——
Pd(DPEPhos)Cl2-catalyzed Negishi cross-couplings for the formation of biaryl and diarylmethane phloroglucinol adducts
作者:Eric G. Dennis、David W. Jeffery、Michael V. Perkins、Paul A. Smith
DOI:10.1016/j.tet.2011.01.030
日期:2011.3
Several functionalized biaryls and diarylmethanes containing the phloroglucinol subunit were synthesized in 55-85% yields using Negishi cross-couplings of 2,4,6-trimethoxyphenylzinc chloride with aryl and benzyl halides in the presence of catalytic quantities of Pd(DPEPhos)Cl-2. These simple to prepare couplings were generally complete in 1-24 h depending on the halide, and were applicable to aryl and benzyl halides containing both electron-donating and electron-withdrawing groups. (C) 2011 Elsevier Ltd. All rights reserved.