Simplified Approach to the Uncatalyzed Knoevenagel Condensation and Michael Addition Reactions in Water using Microwave Irradiation
摘要:
Use of microwave irradiation in the synthesis of arylidenemalononitrile and benzopyran derivatives in water without catalyst is a clean method with high yield.
characterized by various analytical methods and suitably used for facilitating the organicsynthesis reactions. Briefly, high reaction yield (99%) has been obtained in short reaction times (4 min) in the synthesis reactions of chromene pharmaceutical derivatives, through applying this highly efficient organometallic catalyst. From mechanistic aspect, effective electronic interactions between heteroatoms
Multi component one pot synthesis and characterization of derivatives of 2-amino-7,7- dimethyl-5-oxo-4-phenyl-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile and study of anti-microbial activity
作者:N. K. Rao、T. N. Rao、B. Parvatamma、K. P. Devi、S. C. Setty
DOI:10.4314/bcse.v32i1.12
日期:——
An efficient and convenient procedure has been described for one-pot multi-component synthesis
已描述了一种高效便捷的一锅多组分合成方法。
Ceria-Vanadia/Silica-Catalyzed Cascade for C−C and C−O Bond Activation: Green One-Pot Synthesis of 2-Amino-3-cyano-4<i>H</i>-pyrans
作者:Surya Narayana Maddila、Suresh Maddila、Werner E. van Zyl、Sreekantha B. Jonnalagadda
DOI:10.1002/open.201500159
日期:2016.2
We designed a ceria–vanadia/silica (Ce–V/SiO2) heterogeneous catalyst and used it for the green and efficient synthesis of 2‐amino‐3‐cyano‐4H‐pyran derivatives. The green reaction was a multicomponent one‐pot condensation of 5,5‐dimethylcyclohexane‐1,3‐dione, aromatic aldehyde, and malononitrile in an eco‐compatible solvent (ethanol). The catalyst was synthesized and fully characterized by powder X‐ray