NITROGEN-CONTAINING HETEROCYCLIC COMPOUND OR SALT THEREOF
申请人:FUJIFILM Corporation
公开号:US20150322063A1
公开(公告)日:2015-11-12
A compound represented by Formula [1] (in the formula, Z
1
represents N, CH, or the like; X
1
represents NH or the like; R
1
represents a heteroaryl group or the like; each of R
2
, R
3
, and R
4
represents a hydrogen atom, a halogen atom, an alkoxy group, or the like; and R
5
represents a heteroaryl group or the like) or salt thereof.
Selective Halogenation of Pyridines Using Designed Phosphine Reagents
作者:Jeffrey N. Levy、Juan V. Alegre-Requena、Renrong Liu、Robert S. Paton、Andrew McNally
DOI:10.1021/jacs.0c04674
日期:2020.6.24
metal complexes, but strategies to selectively halogenate pyridine C-H precursors are lacking. We designed a set of heterocyclic phosphines that are installed at the 4-position of pyridines as phosphonium salts and then displaced with halide nucleophiles. A broad range of unactivated pyridines can be halogenated, and the method is viable for late-stage halogenation of complex pharmaceuticals. Computational
作者:Enrique Font-Sanchis、F. Javier Céspedes-Guirao、Ángela Sastre-Santos、Fernando Fernández-Lázaro
DOI:10.1021/jo062638k
日期:2007.4.1
The palladium-mediated coupling reaction between triorganoindium reagents and organic electrophiles is extended to the synthesis of heteroaromatic compounds. Both electron-rich and electron-poor heterocycles can act as the organic electrophile or as the organoindium derivative.
Synthesis of 1-Methyl-5-(pyrazol-3- and -5-yl- and 1, 2, 4-triazol-3- and 5-yl)-1, 2, 3, 6-tetrahydropyridine Derivatives and Their Evaluation as Muscarinic Receptor Ligands
A series of 1‐methyl‐5‐(pyrazol‐3‐ and ‐5‐yl‐ and 1, 2, 4‐triazol‐3‐ and 5‐yl)‐1, 2, 3, 6‐tetrahydropyridine derivatives structurally related to arecoline were synthesized and evaluated on M1, M2, and M3 muscarinicreceptors using [3H] pirenzepine and [3H] NMS as ligands. The binding affinity depended on the position and size of the substituents. The most interesting compounds were further evaluated
Selective Palladium‐Catalyzed Direct CH Arylation of Unsubstituted
<i>N</i>
‐Protected Pyrazoles
作者:Esa T. T. Kumpulainen、Antti Pohjakallio
DOI:10.1002/adsc.201301139
日期:2014.5.5
selective C‐5 arylation of N‐dimethylaminosulfamoyl‐protected pyrazole with aryl bromides is catalyzed by 2–5 mol% palladium in the presence of triphenylphosphine ligand and carboxylic acid additive. Selectivities up to 45:1 (C‐5:C‐4) can be achieved by running the reaction in non‐polar solvents. A thorough study of scope and limitations shows good general tolerance of aryl bromide substitution. However