نتایج جستجو برای: vilsmeier haack reaction
تعداد نتایج: 412538 فیلتر نتایج به سال:
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,
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...
An efficient synthesis of 2-heteroarylazulene derivatives was established via electrophilic substitution. The reaction of 6-dimethylamino-1,3-di(methylthio)azulene (1a) with the triflate of N-containing heteroarenes proceeded in the presence of excess heteroarenes to afford the corresponding 2-dihydroheteroarylazulene derivatives 3−7. The 2-dihydroheteroarylazulene derivatives were readily conv...
Sir, The letter by Haack et al. (2014) provides important information confirming the role of the thiamine transporter hTHTR2 in Leigh syndrome and the beneficial effect of biotin and/or thiamine treatment for patients harbouring mutations in the gene encoding hTHTR2, SLC19A3. In recent years many new pathogenic mutations have been reported in SLC19A3 resulting in several age-related neurologica...
Abstract Derivatives of formyl pyrazole were synthesized by the reaction acetophenone, 4-methyl 3-acetyl furan, thiophen and phenyl hydrazine derivatives. The product was treated with Vilsmeier reagent producing different derivatives which characterized FT-IR, 1HNMR, Elemental analysis Mass spectroscopy. reacted chitosan to produce chitosan/ Schiff base. These bases FT-IR TGA.The antimicrobial ...
Formamides represent an important class of intermediates in various organic syntheses. They have been used in the synthesis of some pharmaceutically important compounds such as Fluoroquinolones [1], 1, 2 dihydro quinolones [2] and Nitrogen based heterocyclic compounds [3]. In Lewis bases, its main importance is to catalyze some important reactions such as allylation [4] and hydrosilyation of ca...
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