A simple method for the preparation of functionalized trisubstituted alkenes and α,β,γ,δ-unsaturated carbonyl compounds by using natural amino acid l-tryptophan
作者:Ying Hu、Yan-Hong He、Zhi Guan
DOI:10.1016/j.catcom.2010.01.016
日期:2010.3
reactive acetylacetone and ethyl acetoacetate. The reactions were carried out at room temperature and gave good yields. It is a convenient entry for preparation of functionalizedtrisubstituted alkenes and α,β,γ,δ-unsaturated carbonyl compounds.
Natural <font>α</font>-Amino Acid L-Lysine–Catalyzed Knoevenagel Condensations of <font>α</font>,<font>β</font>-Unsaturated Aldehydes and 1,3-Dicarbonyl Compounds
作者:Yan-Hong He、Ying Hu、Zhi Guan
DOI:10.1080/00397911.2010.490626
日期:2011.5.3
Abstract Knoevenagel condensations of α,β-unsaturated aldehydes and 1,3-dicarbonylcompounds were catalyzed by primary natural amino acid L-lysine. The reactions were carried out at room temperature in dimethylsulfoxide. It provides a facile entry to a wide variety of α,β,γ,δ-unsaturated dicarbonyl compounds. Supplemental materials are available for this article. Go to the publisher's online edition