نتایج جستجو برای: haack series
تعداد نتایج: 351102 فیلتر نتایج به سال:
A concise approach to the spiroiminal fragment of marineosins A and B is described. The key steps involve an acid-catalyzed N-acyliminium ion cyclization and a Vilsmeier-Haack type reaction with Tf2O.
My research focuses on scientific computing and kinetic equations. More specifically I develop and analyze numerical methods for solving the Boltzmann transport equation and similar kinetic models, as well as their application to high performance computing resources. My work is supported by NSF-DMS Grant 1217254 “Accurate high performance computing for nonlinear collisional kinetic theory”, (20...
abstract: the present study is an attempt to find out cultural exophoric references in iranian high-school elt textbooks and touch stone series to compare the frequency of occurrence of such references in these books. the purpose is to find out which of the series of the books under investigation impose a greater referential burden on efl learners as far as their reading comprehension of the ...
Marie Sieger 1886-1970-Beruf: Malerin. Hrsg. im Auftrag des Förderkreises Hällisch-Fränkisches Museum e. V.: Herta Beutter, Ariane Haack- Kurz, Armin Panter. Künzelsau (Swiridoff) 2003, 120 S., Abb. u. Farbtafeln
1 Motivation Grundsätzlich lassen sich drei Aufgaben in der universitären Lehre unterscheiden: (1) Die Wissensvermittlung, (2) die Wissensanwendung und-vertiefung und (3) die Wissens-und Verständnisüberprüfung. E-Learning-Systeme entwickelt werden, die die folgenden drei Eigenschaften erfül-len: (a) Die Übungsaufgaben sind interaktiv und anspruchsvoll (vgl. Haack 2002,
The title compound, C(17)H(11)Cl(3)O, was synthesized via the Vilsmeier-Haack reaction. The dihydro-naphthalene ring system is non-planar, the dihedral angle between the two fused rings being 10.87 (13)°; it forms a dihedral angle of 81.45 (10)° with the dichloro-phenyl ring. The crystal structure features inter-molecular C-H⋯O hydrogen bonds.
The study of the Vilsmeier-Haack reagent on 4-hydroxyquinaldines resulted in a new versatile intermediate 4-chloro-3-formyl-2-(2-hydroxy-ethene-1-yl)quinolines, which on further treatment with hydrazine hydrate yielded the desired diazepino quinoline derivatives. All the synthesized diazepino quinoline derivatives are screened for their antibacterial and antifungal activities. Cytogenetic analy...
Lyle G. Best ([email protected]) Kari E. North ([email protected]) Xia Li ([email protected]) Vittorio Palmieri ([email protected]) Jason G. Umans ([email protected]) Jean MacCluer ([email protected]) Sandra Laston ([email protected]) Karin Haack ([email protected]) Harald Goring ([email protected]) Laura Almasy ([email protected]) Elisa T. Lee (elisa-lee@ouh...
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