作者:Jaewon Choi、Hye Yun Yang、Hae Jin Kim、Seung Uk Son
DOI:10.1002/anie.201003101
日期:2010.10.11
Hollow‐sphere catalysts were prepared by means of 3D network formation between a tetraimidazolium building block and palladium acetate. The bis(N‐heterocyclic carbene)–palladiumspecies that were concomitantly formed during growth of the hollowspheres showed excellent activity as heterogeneous catalysts in one‐pot three‐component Streckerreactions of ketones (see picture; TMS=trimethylsilyl).
Sulfated tungstate: a green catalyst for Strecker reaction
作者:Sagar P. Pathare、Krishnacharya G. Akamanchi
DOI:10.1016/j.tetlet.2011.12.027
日期:2012.2
A straightforward, mild, efficient, and general method has been developed for the synthesis of alpha-aminonitriles via Strecker reaction starting from aldehydes or ketones, amines, and trimethylsilyl cyanide in the presence of sulfated tungstate as a heterogeneous mild solid acid catalyst at room temperature and solvent free condition. The developed method has been successfully applied for the synthesis of a wide range of alpha-aminonitriles with variable functionality. (C) 2011 Elsevier Ltd. All rights reserved.
Highly efficient three-component Strecker-type reaction catalyzed by MgI 2 etherate under solvent-free conditions
A concise, straightforward and efficient method has been developed for the synthesis of α-aminonitriles by an one-pot three-component condensation of aldehydes or ketones, amines and trimethylsilyl cyanide catalyzed by MgI2 etherate under solvent-free conditions. This protocol has some advantages such as mild reaction condition, simple work-up, short reaction time and high product yields.
Synthesis and reactions of 4-Hydroxy-2(1<i>H</i>)-pyridones with thienyl and pyridyl substituents in position 6 starting with azomethines and malonates
作者:Barbara Schnell
DOI:10.1002/jhet.5570360234
日期:1999.3
The reaction of 4 with substituted diethyl malonates 5a, or “magic malonates” (bis-2,4,6-trichlorophenylmalonates 5b) leads to 4-hydroxy-2(1H)-pyridones 6. The azomethines 4 are prepared via the Strecker compounds 3 starting with methyl ketones 1, anilines, and potassium cyanide. Chlorination of pyridones 6 with sulfurylchloride leads to compounds 7 while nitration gives 9.
的反应4与取代的二乙基丙二酸酯5a中,或“魔术丙二酸酯”(双-2,4,6- trichlorophenylmalonates 5B)导致4-羟基-2(1 H ^) -吡啶酮6的甲亚胺4制备经由所述斯特雷克尔从甲基酮1,苯胺和氰化钾开始的化合物3。用硫酰氯氯化吡啶酮6会生成化合物7,而硝化则会生成9。