On-water magnetic NiFe<sub>2</sub>O<sub>4</sub> nanoparticle-catalyzed Michael additions of active methylene compounds, aromatic/aliphatic amines, alcohols and thiols to conjugated alkenes
作者:Soumen Payra、Arijit Saha、Subhash Banerjee
DOI:10.1039/c6ra21160g
日期:——
Here, we have demonstrated the Michael addition of active methylene compounds, aromatic/aliphaticamines, thiols and alcohols to conjugated alkenes using magnetic nano-NiFe2O4 as reusable catalyst in water. Nano-NiFe2O4 efficiently catalyzed the formation of C–C and C–X (X = N, S, O etc.) bond through 1,4-addition reactions.
在这里,我们已经证明了使用磁性纳米NiFe 2 O 4作为在水中可重复使用的催化剂将活性亚甲基化合物,芳香族/脂肪族胺,硫醇和醇的迈克尔加成到共轭烯烃上。纳米NiFe 2 O 4通过1,4-加成反应有效催化了CC和CX (X = N,S,O等)键的形成。
A mild, chemoselective, one-pot synthesis of δ-keto α-cyano esters by organocatalysis
作者:Gang Liu、Yingcai Wang
DOI:10.1016/j.tetlet.2013.10.145
日期:2014.1
A sequential condensation of α-cyanoesters, aldehydes, and ketones with catalytic amount of pyrrolidine/HOAc at room temperature has been developed. This method offers a chemoselective, one-pot cascade access to δ-keto α-cyanoesters with moderate to good yields under mild conditions.
A Mild, Efficient, and Green Procedure for Michael Addition of Active Methylene Compounds to Chalcones Under Microwave Irradiation
作者:Satya Paul、Monika Gupta、Parvinder Pal Singh、Rajive Gupta、André Loupy
DOI:10.1081/scc-200048473
日期:2005.1
Abstract A simple, rapid, and highly efficient method has been developed for the Michael addition of activemethylenecompounds to chalcones using potassium carbonate and water under microwave irradiation. The method is totally exempt of organic solvents, and pure products were obtained in good to excellent yields. This method can be used for the parallel synthesis and further scale‐up to 50 mmol of
Samarium(III) Iodide Promoted Three-Component Coupling Reactions of Aldehydes, α-Haloketones, and Active Methylene or Methyl Compounds
作者:Yongmin Ma、Yongmin Zhang
DOI:10.1081/scc-120016312
日期:2003.1.4
Abstract In the presence of samarium(III) iodide, the reaction of aldehydes, α-haloketones with malononitrile, ethylcyanoacetate or nitromethane proceeded very efficiently and furnished moderate to high yields of adducts.