The amination of 2‐pyridine‐ and 8‐quinolinesulfonic acids using magnesium amides is reported. Various amides reacted with N‐heterocyclic sulfonic acids, leading to aminopyridines and aminoquinolines in up to 98 % yield. Various amines important in medicinal chemistry, such as the antidepressant amoxapine, were suitable for these aminations.
Nickel-catalysed selective N-arylation or N,N′-diarylation of secondary diamines
作者:Eric Brenner、Raphaël Schneider、Yves Fort
DOI:10.1016/s0040-4020(02)00750-0
日期:2002.8
synthesis of N-aryl or N,N′-diaryl piperazines and trimethylene(bis)piperidines from the corresponding diamines and aryl chlorides using a catalyst combination of Ni(0) associated to 2,2′-bipyridine is described. The Ni/2,2′-bipyridine catalyst is also effective for the sequential arylation of piperazine. The preparation of novel and unsymmetrical 1,4-diaryl piperazines is reported.
作者:K. E. Hamlin、Arthur W. Weston、Francis E. Fischer、R. J. Michaels
DOI:10.1021/ja01176a038
日期:1949.8
Nickel-mediated amination chemistry. Part 2: Selective N-arylation or N,N′-diarylation of piperazine
作者:Eric Brenner、Raphaël Schneider、Yves Fort
DOI:10.1016/s0040-4039(00)00277-x
日期:2000.4
The 2,2'-bipyridine liganded Ni catalyst has revealed a good selectivity in the mono arylation of piperazine starting from aryl chlorides allowing a selective and efficient synthesis of N-arylpiperazines using stoichiometric amounts of reagents. The preparation of N,N'-diaryl substituted piperazines is also described. (C) 2000 Elsevier Science Ltd. All rights reserved.
Synthesis of New Armed Cyclopolyamines and Their Selective Extraction Properties for Metal Ions
作者:Kiyoshi Matsumoto、Keisuke Fukuyama、Hirokazu Iida、Mitsuo Toda、J. William Lown
DOI:10.3987/com-94-6952
日期:——
A variety of new armed cyclopolyamines were prepared by high pressure SNAr reactions (0.8 GPa, 100 degrees C) of cyclopolyamines with heteroaromatic halides. Certain of these agents show selective extraction properties for Hg2+ and Ag+ ions.