A new prearranged tripodant ligand N,N′,N″-trimethyl-N,N′,N″-tris(3-pyridyl)-1,3,5-benzene tricarboxamide is easily obtained via the N-methyl amide effect
摘要:
The N-methyl amide cis generating effect has been utilised to create a new prearranged tripodant ligand in two synthetic steps from benzene-1,3,5-tricarbuxylic acid. Crystals of rhc ligand itself and of complexes with metal sails such as silver(I) triflate, copper(I) and copper(II) chloride and ruthenium(II) chloride have been prepared and the crystal structures solved by analysis of X-ray diffraction data. (C) 2001 Elsevier Science Ltd. All rights reserved.
A new prearranged tripodant ligand N,N′,N″-trimethyl-N,N′,N″-tris(3-pyridyl)-1,3,5-benzene tricarboxamide is easily obtained via the N-methyl amide effect
摘要:
The N-methyl amide cis generating effect has been utilised to create a new prearranged tripodant ligand in two synthetic steps from benzene-1,3,5-tricarbuxylic acid. Crystals of rhc ligand itself and of complexes with metal sails such as silver(I) triflate, copper(I) and copper(II) chloride and ruthenium(II) chloride have been prepared and the crystal structures solved by analysis of X-ray diffraction data. (C) 2001 Elsevier Science Ltd. All rights reserved.
Acceleration of Pd-Catalyzed Amide N-Arylations Using Cocatalytic Metal Triflates: Substrate Scope and Mechanistic Study
作者:Joseph Becica、Graham E. Dobereiner
DOI:10.1021/acscatal.7b01317
日期:2017.9.1
comparison with iodobenzene (PhI). The observation of an aryl halide dependence on rate and various qualitative kinetic experiments are consistent with a mechanism in which ligand exchange of halide for amide (“transmetalation”) is turnover limiting. The mechanism may be different depending on whether PhBr or PhI is used as a coupling partner. Oxidative addition complexes (xantphos)Pd(Ph)(X) (X = Br, I;
Cross coupling of 3-bromopyridine and sulfonamides (R1NHSO2R2·R1=H, Me, alkyl; R2=alkyl and aryl) catalyzed by CuI/1,3-di(pyridin-2-yl)propane-1,3-dione
作者:Xiaojun Han
DOI:10.1016/j.tetlet.2009.11.037
日期:2010.1
N-(3-Pyridinyl)-substituted secondary and tertiary sulfonamides have been synthesized in good to excellent yields by the reaction of 3-bromopyridine with primary and secondary alkyl and aryl sulfonamides (MeSO2NH2, MeSO2NHMe, TolSO(2)NH(2), TolSO(2)NHMe, 1,3-propanesultam, and 1,4-butanesultam), catalyzed by CuI (20 mol %) and 1,3-di(pyridin-2-yl)propane-1,3-dione (20 mol %) with K2CO3 (200 mol %) in DMF (0.17 M for ArBr) at 110-120 degrees C over 36-40 h. 2-Bromopyridine, 4-bromopyridine, and a wide variety of substituted phenyl bromides can also be successfully coupled with sulfonamides under these reaction conditions. (C) 2009 Elsevier Ltd. All rights reserved.
Kalatzis, Evangelos; Papadopoulos, Panayiotis, Journal of the Chemical Society. Perkin transactions II, 1981, p. 248 - 255
作者:Kalatzis, Evangelos、Papadopoulos, Panayiotis
DOI:——
日期:——
A new prearranged tripodant ligand N,N′,N″-trimethyl-N,N′,N″-tris(3-pyridyl)-1,3,5-benzene tricarboxamide is easily obtained via the N-methyl amide effect
作者:Mikkel Jørgensen、Frederik C Krebs
DOI:10.1016/s0040-4039(01)00800-0
日期:2001.7
The N-methyl amide cis generating effect has been utilised to create a new prearranged tripodant ligand in two synthetic steps from benzene-1,3,5-tricarbuxylic acid. Crystals of rhc ligand itself and of complexes with metal sails such as silver(I) triflate, copper(I) and copper(II) chloride and ruthenium(II) chloride have been prepared and the crystal structures solved by analysis of X-ray diffraction data. (C) 2001 Elsevier Science Ltd. All rights reserved.