Potassium Triiodide. A New and Efficient Catalyst for Carbon–Carbon Bond Formation in Aqueous Media
作者:Ashim J. Thakur、Dipak Prajapati、Baikuntha J. Gogoi、Jagir S. Sandhu
DOI:10.1246/cl.2003.258
日期:2003.3
Potassiumtriiodide catalyses the condensation of carbonyl compounds with active methylene compounds in aqueous media to afford E olefinic products in high yields.
三碘化钾催化羰基化合物与活性亚甲基化合物在水性介质中的缩合反应,以高产率得到 E 烯烃产物。
Tyrphostins. 5. Potent Inhibitors of Platelet-Derived Growth Factor Receptor Tyrosine Kinase: Structure−Activity Relationships in Quinoxalines, Quinolines, and Indole Tyrphostins
作者:Aviv Gazit、Harald App、Gerald McMahon、Jefferey Chen、Alexander Levitzki、Frank D. Bohmer
DOI:10.1021/jm950727b
日期:1996.1.1
3-arylquinoxalines were prepared and tested for inhibition of platelet-derivedgrowthfactorreceptortyrosinekinase (PDGF-RTK) activity. The potency of the inhibitors was found to be quinoxalines > quinolines > indoles. Lipophilic groups (methyl, methoxy) in the 6 and 7 positions and phenyl at the 3 position of quinoxalines and quinolines were essential for potency, in contrast to the hydrophilic catechol
Synthesis of di/trifluoromethyl cyclopropane-dicarbonitriles <i>via</i> [2+1] annulation of fluoro-based diazoethanes with (alkylidene)malononitriles
作者:Cheng-Feng Gao、Yue-Ji Chen、Jing Nie、Fa-Guang Zhang、Chi Wai Cheung、Jun-An Ma
DOI:10.1039/d3cc03897a
日期:——
Herein, we describe a [2+1] annulation reaction of di/trifluorodiazoethane with (alkylidene)malononitriles. This protocol offers a streamlined synthesis of a wide range of stereospecific and densely functionalized difluoromethyl and trifluoromethyl cyclopropane-1,1-dicarbonitriles. Further functional group interconversions or skeletal elaborations afford structurally distinct cyclopropyl variants.