Aromatic Nucleophilic Substitution of Halobenzenes with Amines under High Pressure
作者:Toshikazu Ibata、Yasushi Isogami、Jiro Toyoda
DOI:10.1246/bcsj.64.42
日期:1991.1
The nucleophilicsubstitutionreactions of aromatic halides having electron-attracting groups on ortho or para position with various primary and secondary amines were accelerated by highpressure to give the corresponding N-substituted anilines in high yields. The bulkiness of amines affects its reactivity to lower the yields of the products. Although the secondary amines are usually less reactive
Nucleophilic Substitution of Aromatic Halides with Amines under High Pressure
作者:Toshikazu Ibata、Yasushi Isogami、Jiro Toyoda
DOI:10.1246/cl.1987.1187
日期:1987.6.5
The reaction of aromatic chlorides, bromides and iodides with various primary or secondary amines in a tetrahydrofuran solution under highpressure of 6–12 kbar gave the corresponding secondary and tertiary aromatic amines. The yields of the products depend on the bulkiness of amines used. 1,4-Diazabicyclo[2.2.2]octane and quinuclidine gave N-aryl quarternary ammonium halides in high yields in contrast
在 6-12 kbar 的高压下,芳族氯化物、溴化物和碘化物与各种伯胺或仲胺在四氢呋喃溶液中反应,得到相应的仲胺和叔芳胺。产品的产率取决于所用胺的体积。与无环叔胺的低反应性相比,1,4-二氮杂双环 [2.2.2] 辛烷和奎宁环以高产率得到 N-芳基季铵卤化物。
A Pd/Cu-Free magnetic cobalt catalyst for C–N cross coupling reactions: synthesis of abemaciclib and fedratinib
作者:Zahra Khorsandi、Abdol R. Hajipour、Mohamad Reza Sarfjoo、Rajender S. Varma
DOI:10.1039/d1gc00518a
日期:——
bearing functional groups as supports for cobalt species is described. Subsequent to its characterization, the efficiency of the catalyst was investigated for C–N cross-coupling reactions using assorted derivatives of amines and aryl halides. This novel and easily accessible Pd- and Cu-free catalyst exhibited good catalytic activity in these reactions using γ-valerolactone (GVL) at room temperature;
Phenylene-Bis-Oxazolidine Derivatives and Their Use as Anticoagulants
申请人:Rohrig Susanne
公开号:US20100041646A1
公开(公告)日:2010-02-18
The present application relates to novel 1,4-phenylene-bis-oxazolidine derivatives, to processes for their preparation, to their use for the treatment and/or prophylaxis of diseases and also to their use for preparing medicaments for the treatment and/or prophylaxis of diseases, in particular thromboembolic disorders.
Reductive<i>N</i>-Monoalkylation of Primary Aromatic Amines
作者:Giancarlo Verardo、Angelo G. Giumanini、Paolo Strazzolini、Marco Poiana
DOI:10.1055/s-1993-25813
日期:——
Primary aromatic amines 1 with a variety of ring substituents are easily converted to their N-monoalkyl derivatives 3 by a simple variation of the sodium borohydride/sulfuric acid/carbonyl compound procedure previously described for their N-permethylations. The procedure is suitable for the α-monodeuterium labelling of the new N-substituent.