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  • Organic Chemistry  (15)
  • biological control  (3)
  • General Chemistry
  • 1975-1979  (18)
  • 11
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 318 (1976), S. 116-126 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: α-Substituted Phosphonates. XIX. Derivatives of Aminomethane-bis-phosphonic AcidAminomethane-bis-phosphonic acid tetraethylesters have been prepared by various methods. Chlorination and hydrolysis of these compounds have been studied in detail.
    Notes: Aminomethan-bis-phosphonsäure-tetraäthylester wurden nach verschiedenen Verfahren synthetisiert. Die Chlorierung und die Hydrolyse dieser Verbindungen wurden eingehend untersucht.
    Additional Material: 3 Tab.
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  • 12
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 318 (1976), S. 157-160 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: α-Aminoacids and Derivatives. VIII. A Simple Synthesis of PhosphinothricinA simple and economical synthesis of D,L-phosphinothricin 2 - the active part of an antibiotical effective heterotripeptide which was isolated from Streptomyces viridochromogenes - is described.
    Notes: Es wird eine einfache und ökonomische Synthese von D, L-Phosphinothricin 2, dem wirksamen Bestandteil eines aus Streptomyces viridochromogenes isolierten antibiotisch wirksamen Heterotripeptids beschrieben.
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  • 13
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 318 (1976), S. 403-408 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: α-Substituted Phosphonates. XXI. On the Formation of Hydroxyaryl-substituted Methane-bis-phosphonic Acid Tetraestersα-Amino-α-(4-hydroxy-3,5-di-tert.-butyl-phenyl)-methanephosphonic acid diethylester 1 can be converted by different methods to (4-hydroxy-3,5-di-tert.-butyl-phenyl)-bis-phosphonic acid tetraethylesters 2. Course and intermediates of these smoothly proceeding reactions are investigated.
    Notes: α-Amino-α-(4-hydroxy-3,5-di-tert.-butyl-phenyl) - methanphosphonsäurediäthylester 1 lassen sich auf verschiedenen Wegen in (4-Hydroxy- 3,5-di-tert.-butyl-phenyl)-methan-bisphosphonsäuretetraäthylester 2 überführen. Ablauf und Intermediärprodukte dieser z. T. auffallend glatt verlaufenden Reaktion werden untersucht.
    Additional Material: 1 Tab.
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  • 14
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 319 (1977), S. 17-22 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: α-Substituted Phosphonates. XXIII. Synthesis of Open-chain and Cyclic S,S-Acetals of Formyl-phosphonic Acid EstersThe synthesis of open-chain and cyclic alkyl- resp. aryl-S,S-acetals of formylphosphonic acid esters by various methods is described. The 1H-, 13C- and 31P-n.m.r. spectra are discussed.
    Notes: Die Synthese von offenkettigen und cyclischen Alkyl- bzw. Aryl-S,S-acetalen von Formylphosphonsäureestern nach verschiedenen Methoden wird beschrieben. Die 1H-, 13C- und 31P-NMR-Spektren dieser Verbindungen werden diskutiert.
    Additional Material: 2 Tab.
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  • 15
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 319 (1977), S. 8-16 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: α-Substituted Phosphonates. XXII. Synthesis and N.M.R. Spectra of Open-chain and Cyclic Acetals of Formyl-phosphonic Acid Esters and Formyl-diphenylphosphinoxideThe synthesis of characteristical examples of open-chain and cyclic alkyl-resp. arylacetals of formyl-phosphonic acid esters and of formyl-diphenylphosphinoxide by various methods is described. The 1H-, 13C- and 31P-n.m.r.-spectra of this compounds and their dependence on the structure is discussed.
    Notes: Es wird die Synthese einer Reihe charakteristischer Vertreter offenkettiger und cyclischer Alkyl- bzw. Arylacetale von Formyl-phosphonsäureester und Formyl-diphenyl-phosphinoxid nach verschiedenen Methoden beschrieben. Die 1H-, 13C- und 31P-NMR-Spektren dieser Verbindungen und ihre Abhängigkeit von der Struktur wird diskutiert.
    Additional Material: 4 Tab.
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  • 16
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 317 (1975), S. 798-806 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Phosphonsäuremonoalkylester bzw. Phosphonsäuren reagieren mit Epoxiden zu Phosphonsäure-alkyl-β-hydroxyalkyl- 5 bzw. -bis-β-hydroxyalkylestern 9 oder zu höhermolekularen Polyglykolestern. Durch intramolekulare Umesterung entstehen aus 5 bzw. 9 beim Destillieren unter Abspaltung von Alkohol bzw. Glykol cyclische Phosphonsäureester 6 bzw. 11.
    Additional Material: 3 Tab.
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  • 17
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 318 (1976), S. 272-278 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: α-Substituted Phosphonates. XX. Investigations on the C - N-Rearrangement of Aminomethane Bis- and Tris-phosphoryl CompoundsAttempts to prepare aminomethane-bis-phosphoryl-compounds of the types 5, 9 and 13, i.e. with a NH-function on the methin-carbon-atom, yielded independently of the synthetic path in all cases by C-N-rearrangement of a phosphoryl-group the N-phosphorylated aminomethane-phosphonic acid esters 6, 10/11 and 14. The course of this rearrangement has been studied on characteristic examples.
    Notes: Versuche zur Darstellung von Aminomethan-bis-phosphorylverbindungen des Typs 5, 9 bzw. 13, also mit einer NH-Funktion am Methin-Kohlenstoffatom führen unabhängig vom Syntheseweg stets unter C-N-Wanderung eines Phosphorylrestes zu N-phosphorylierten Aminomethanphosphonsäureestern 6, 10/11 bzw. 14. Der Ablauf dieser Umlagerung wird an charakteristischen Beispielen untersucht.
    Additional Material: 1 Tab.
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  • 18
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 320 (1978), S. 140-142 
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Derivatives of o-Phenylenphosphates. XVI. o-Phenylendioxyphosphonium-hexahalogenoantimonatesPentacoordinated o-phenylen-orthophosphate-trihalogenides 1 resp. bis-o-phenylenorthophosphate-chloride 3 can be transformed to stable quasiphosphoniumsalts 2 resp. 4 by reaction with SbCl5 or SbBr3/Br2. The structures of 2 and 4 are confirmed by 31P-n.m.r.
    Additional Material: 1 Tab.
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