An effective aza-Michael addition of aromatic amines to electron-deficient alkenes in alkaline Al2O3
作者:Xin Ai、Xin Wang、Jin-ming Liu、Ze-mei Ge、Tie-ming Cheng、Run-tao Li
DOI:10.1016/j.tet.2010.05.054
日期:2010.7
Aza-Michaeladdition of aromatic or aliphatic amines with various electron-deficient alkenes was performed using alkaline Al2O3 as solid media at room temperature afforded the corresponding Michael addition products in good to excellent yields. The alkaline Al2O3 can be easily recovered and reused.
在室温下,使用碱性Al 2 O 3作为固体介质,对芳香族或脂肪族胺与各种缺电子的烯烃进行Aza-Michael加成反应,得到了相应的Michael加成产物,收率良好至极佳。碱性Al 2 O 3可以容易地回收和再利用。
Synthesis, Characterization and Catalytic Application of MCM 41 Supported Phenanthrolinium Dibromide Catalyst for Aza-Michael Addition Reaction in Aqueous Medium
MCM-41 immobilized phenanthrolinium dibromide (phen-MCM-Br2) was easily prepared and applied as an efficient heterogeneous catalyst for aza-Michael addition of aromatic amines to α,β-unsaturated nitriles and nitro compounds in water. The catalyst was characterized by CHN, TGA, FT-IR, SEM, EDAX, XRD, BET, and TEM. It could be simply recovered and reused several times without significant loss of catalytic
Verfahren zur Herstellung von Mono-N-Beta-cyanoethylanilinen
申请人:BAYER AG
公开号:EP0609736A1
公开(公告)日:1994-08-10
Ein neues Verfahren zur Herstellung von Mono-N-β-cyanoethylanilinen, dadurch gekennzeichnet, daß man eine gegebenenfalls substituierte Anilinverbindung mit Acrylnitril in Gegenwart von aktiver Bleicherde als Katalysator bei einer Temperatur zwischen 80 und 200°C in einem nichtwäßrigen Reaktionsmedium umsetzt.
Yb(OTf)3 and Tb(OTf)3 to give the desired β-aminonitriles, β-amino sulfones, and dimethyl aspartates, respectively, in moderate to excellent yields. The reactions were carried out in toluene for Yb(OTf)3 and in t-BuOMe for Tb(OTf)3, all reactions were performed at 100 °C.