21448-05-5Relevant academic research and scientific papers
Solvent-free preparation method of di-substituted malononitrile derivative
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Paragraph 0021-0049, (2019/05/11)
The invention relates to a solvent-free preparation method of a di-substituted malononitrile derivative. The solvent-free preparation method comprises: 1, adding malononitrile, aromatic aldehyde and dihydropyridine ester to a reaction test tube according
A base promoted one pot solvent free version of the Ramachary reductive coupling/alkylation reaction for the synthesis of 2,2-disubstituted ethyl cyanoacetates
Jiang, Guangyou,Liu, Min,Fang, Dongmei,Tan, Ping,Huang, Min,Zhou, Taiping,Jiang, Zhenju,Xu, Zhihong,Wang, Zhouyu
, p. 8961 - 8964 (2018/03/08)
An N,N-diisopropylethylamine promoted solvent-free Ramachary reductive coupling/alkylation (RRC/A) reaction for the synthesis of 2,2-disubstituted ethyl cyanoacetates has been developed. A series of 2,2-disubstituted ethyl cyanoacetates were synthesized in one pot by the RRC/A reaction of commercially available aldehydes, ethyl cyanacetates, alkyl halides and Hantzsch ester. A solvent free two step multicomponent reaction has also been developed for the preparation of 2,2-dialkylated malononitriles and 2,2-dialkylated 4-nitrophenyl acetonitriles. All the designed RRC/A products could be easily obtained with good yields by these methods.
