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Darstellung von 2,3,8-substituierten Perhydrooxazolo[3,2-a]pyridinen und die Kristallstruktur von (E)-3-(2-Fluorbenzyliden)-1-[1,2-bis(2-fluorphenyl)- 2-hydroxyethyl]-3,4,5,6-tetrahydropyridiniumchlorid
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Veröffentlicht/Copyright:
2. Juni 2014
2-Fluorobenzaldehyde (1) and pipecolic acid (7) react in dimethyl sulfoxide with potassium carbonate to form benzylidene-oxaindolizidines 4. These diastereomers yield with acids uniform salts, so from 4 with hydrogen chloride results (E)-3-(2-fluorobenzylidene)-1-[1,2-bis(2-fluorophenyl)-2- hydroxyethyl]-3,4,5,6-tetrahydropyridinium chloride (6·Cl), elucidated by X-ray structural analysis. Treatment of 6·Cl with alkali hydroxide regenerates 4. Similarly proline (13), when treated with two equivalents of 1, gives rise to oxapyrrolizidines 14. From 14 in presence of 1 the perchlorate of the benzylidene derivative 15·ClO4 can be obtained which is transformed to benzylideneoxapyrrolizidines 15 by bases.
Keywords: 2-Fluorobenzaldehyde; Pipecolic Acid and Ester; Crystal Structure; Mercury(II)-EDTA Dehydrogenation
Received: 2003-1-3
Published Online: 2014-6-2
Published in Print: 2003-6-1
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Schlagwörter für diesen Artikel
2-Fluorobenzaldehyde;
Pipecolic Acid and Ester;
Crystal Structure;
Mercury(II)-EDTA Dehydrogenation
Artikel in diesem Heft
- Magnetic Properties of Compounds RE2Cu2Mg (RE = Y, La, Pr, Nd)
- Magnetic and Spectroscopic Properties of LiAuSn
- Synthesis, Characterization, Crystal Structure and Magnetic Properties of [(en)CuII(ImH)2](ClO4)2 (en = Ethylenediamine, ImH = Imidazole): A Metalloligand as a Building Block for Heterometal Chains
- Synthese und Struktur des Ammoniumsesquicarbonat Monohydrates (NH4)4[H2(CO3)3] ·H2O
- Ruthenocene mit sterisch anspruchsvollen Cyclopentadienylliganden
- R2Sn3 (R = La – Nd, Sm): A Family of Intermetallic Compounds with their Own Triclinic Structure
- The Synthesis and Structure of the Two Hexafluorophosphate Salts {Cu[P(C7H7)3](CH3CN)2}PF6 and {Cu[P(C7H7)3]2}PF6 Containing the Ligand Tri(1-cyclohepta-2,4,6-trienyl)phosphane
- Semi-Hydrogenated, Asymmetric Metallocene Catalysts for the Propylene Polymerization
- Crystal Structures of Heteronuclear Nickel(II)/Zinc(II) Doubly Oxygen Bridged Schiff-Base Complexes
- Hydroboration of Bis(trimethylsilylethynyl)silanes with 9-Borabicyclo[3.3.1]nonane. A New Route to 1-Sila-3-cyclopentenes and to a 1-Sila-2,4-cyclopentadiene
- Manganiophosphonium-Salze: Synthese, Eigenschaften und Struktur von Komplexen des Typs [CpMn(CO)(NO)PPh2H]BF4 und [Cp′Mn(CO)(NO)PPh2R]X (R = H, CH3, {CpMn(CO)(NO)}; X = BF4, PF6)
- Electrochemistry of Acetate-, Carbonate-, Sulfate-, and Dihydrogenphosphate-Bridged Dirhodium(II) Complexes
- Synthesis, Crystal and Magnetic Structure of the New Double Perovskite Ba2MnMoO6
- Two Atropisomeric N-Methyldioncophyllines A and N-Methylphylline, their Naphthalene-Free Heterocyclic Moiety, from Ancistrocladus barteri
- Darstellung von 2,3,8-substituierten Perhydrooxazolo[3,2-a]pyridinen und die Kristallstruktur von (E)-3-(2-Fluorbenzyliden)-1-[1,2-bis(2-fluorphenyl)- 2-hydroxyethyl]-3,4,5,6-tetrahydropyridiniumchlorid
- Teilweise Sauerstoff-Wanderung in der photochemischen Wolff-Umlagerung – α-Oxocarben-Oxiren-Isomerisierung oder intermolekularer Mechanismus?
