Highly Efficient Ligands for the Palladium-Assisted Double<i>N</i>-Arylation of Primary Amines for One-Sep Construction of Carbazoles
作者:Yibo Zhou、John G. Verkade
DOI:10.1002/adsc.200900846
日期:2010.3.8
highly efficient one‐pot synthesis of carbazoles via palladium‐catalyzed double N‐arylation of primary amines with 2,2′‐dihalobiphenyls is described using a catalyst system comprised of tris(dibenzylideneacetone)dipalladium(0) (Pd2dba3) and the proazaphosphatrane P(i‐BuNCH2CH2)3N (8) or its derivative (t‐Bu)2PNP(i‐BuNCH2CH2)3N (9a) as the ligand. The process is effective for double N‐arylation of 2
A Tuned Bicyclic Proazaphosphatrane for Catalytically Enhanced<i>N</i>-Arylation Reactions with Aryl Chlorides
作者:So Han Kim、Min Kim、John G. Verkade、Youngjo Kim
DOI:10.1002/ejoc.201403428
日期:2015.3
The N-arylation of various amines with arylchlorides proceeded in good-to-excellent yields in the presence of P[N(p-NMe2)C6H4CH2}CH2CH2]3N (1e, a new electron-rich proazaphosphatrane ligand) and small amounts of Pd2(dba)3 (dba = dibenzylideneacetone). This catalytic system was also very effective for the synthesis of carbazoles.
Synthesis of Heteroaromatic Derivatives with Nitrogen Atoms: Tripyrrolyl Pyrimidine and Tripyrrolyl[1,3,5]triazine
作者:D.H. Lee、S.G. Lee、D.I. Jung、J.T. Hahn
DOI:10.14233/ajchem.2013.13307
日期:——
As a part of a research program related to the synthetic study of pharmacologically and photoconductively interesting pyrrole derivatives, we have synthesized 1-arylpyrroles (3a-e), 9-arylcarbazoles (4a-e), aminophenylpyrroles (6a,b), dipyrrolylbenzenes (7a-c), 2,4,6-tri-pyrrol-1-yl-pyrimidine (8) and 2,4,6-tri-pyrrol-1-yl[1,3,5]triazine (9). We proposed a plausible mechanism for the formation of 9-arylcarbazole.