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Angewandte Chemie (German pronunciation: [ˈaŋɡəˌvantə çeˈmiː], meaning "Applied Chemistry") is a weekly peer-reviewed scientific journal that is published by Wiley-VCH on behalf of the German Chemical Society (Gesellschaft Deutscher Chemiker).
The reaction proceeds in moderate yield at room temperature in methanol with formaldehyde or a variety of aryl aldehydes. For example, p-nitrobenzaldehyde reacts to form the β-lactam shown in 71% yield as a 4:1 diastereomeric mixture: An example of the use of the Ugi reaction to form a beta-lactam
The phosphotungstate anion, an example of a polyoxometalate. In chemistry, a polyoxometalate (abbreviated POM) is a polyatomic ion, usually an anion, that consists of three or more transition metal oxyanions linked together by shared oxygen atoms to form closed 3-dimensional frameworks.
Examples of the double sandwich include V 2 2, [20] Ni 2 2 [21] and Cr 2 (pentalene) 2. Depicted at right is an example of a multimetallic sandwich compound, which has four palladium atoms joined in a chain sandwiched between two perylene units. [22] The counterions are bulky tetraarylborates.
Examples include hydronium (crystallised from magic acid as the undecafluorodiantimonate), [4] fluoronium (directly crystallised from fluoroantimonic acid as the undecafluorodiantimonate), [5] noble gas-noble metal cations such as tetraxenonogold(II) (as the undecafluorodiantimonate) [6] and xenonomercury(II) (as a mixed salt of ...
bioconjugation, for example, azidocoumarin, and; biomaterials [62] In combination with combinatorial chemistry, high-throughput screening, and building chemical libraries, click chemistry has hastened new drug discoveries by making each reaction in a multistep synthesis fast, efficient, and predictable.
Dialkylbiaryl phosphine ligands are phosphine ligands that are used in homogeneous catalysis.They have proved useful in Buchwald-Hartwig amination and etherification reactions as well as Negishi cross-coupling, Suzuki-Miyaura cross-coupling, and related reactions. [1]
In a letter to Angewandte Chemie, the German chemist Manfred Christl [14] pointed out not only that the alleged new chemistry was in fact 100-year-old Zincke chemistry but also that the proposed structure for the reaction product was not the 12 membered ring but the 6 membered pyridinium salt (structure 2).