期刊
CHEMISTRY-AN ASIAN JOURNAL
卷 12, 期 18, 页码 2393-2398出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/asia.201701072
关键词
carbocatalysis; cycloaddition; graphene oxide; heterogeneous catalysis; hydrophobic effect
资金
- DST-SERB [SB/FT/CS-139/2014]
- IISc
- CSIR
The Diels-Alder (DA) reaction, a [4+2] cycloaddition reaction, is highly important in synthetic organic chemistry and is frequently used in the synthesis of natural products containing six-membered rings. Herein, we report an efficient protocol for the DA reaction between 9-hydroxymethylanthracene and N-substituted maleimides using two-dimensional graphene oxide (GO) as a heterogeneous carbocatalyst in an aqueous medium at room temperature. High yields, a wide substrate scope, low temperature, excellent functional group tolerance, atom economy, and water as a green solvent are noteworthy features of this protocol. The heterogeneous GO catalyst can be easily recovered and used multiple times without any significant loss in catalytic activity.
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