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  • 1
    Electronic Resource
    Electronic Resource
    Occurrence of poly-d(−)-3-hydroxyalkanoates in the genus Bacillus (1991)
    Oxford, UK : Blackwell Publishing Ltd
    FEMS microbiology letters 84 (1991), S. 0 
    Details
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Abstract A range of Bacillus strains were examined for their ability to accumulate poly-d(−)-3-hydroxyalkanoates (poly-HAKs) which are naturally occurring materials that are optically active, biodegradable thermoplastics. The organisms could produce poly-d(−)-3-hydroxybutyrate (poly-HB) up to 50% of cell dry weight. The content of poly-HB in the cells varied with the growth conditions. The addition of propionate or valerate in the culture resulted in a synthesis of poly-d(−)-3-hydroxyvalerate (poly-HV). All the strains tested had the ability to synthesize the co-polyester poly-HB-co-HV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1574-6968.1991.tb04592.x
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  • 2
    Electronic Resource
    Electronic Resource
    Production of poly-D(-)-3-hydroxybutyrate and poly-D(-)-3-hydroxyvalerate by strains ofAlcaligenes latus (1991)
    Springer
    Antonie van Leeuwenhoek 60 (1991), S. 61-66 
    Details
    ISSN: 1572-9699
    Keywords: poly-D(-)-3-hydroxybutyrate (PHB) ; poly-D(-)-3-hydroxyvalerate (PHV) ; Alcaligenes latus
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Alcaligenes latus strains can accumulate poly-D(-)-3-hydroxybutyrate (PHB) up to about 85% of cell dry weight. The abilities to store poly-D(-)-3-hydroxyvalerate (PHV) of three strains ofA. latus were investigated. With Na-propionate as PHV precursor, strainA. latusDSM 1122 had better PHV accumulation ability than strainsA. latusDSM 1123 and 1124. StrainA. latus DSM 1123 could store PHV when Na-valerate but not Na-propionate served as the PHV precursor. PHB and PHV accumulation byA. latus DSM 1124 rapidly increased when propionic acid and acetic acid were together added to the fermentor. This increase was not obtained in the culture shaker flask and fermentor growing the same strain when Na-propionate alone served as a PHV precursor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00580443
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  • 3
    Electronic Resource
    Electronic Resource
    Verfahren zur selektiven Abtrennung von Palladium (1989)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 335 (1989), S. 568-570 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The platinum group metals (PGM) as well as silver, gold and mercury can be preconcentrated and separated from matrix elements by sorption on specific sorbents. After elution with thiourea in dilute hydrochloric acid, the thiourea matrix is destroyed by NaNO2. We found that the Pd-thiourea-complex forms an insoluble compound under specific conditions. Thereby the separation of Pd from all other platinum group metals, except Os which was not measured, and from Ag, Au and Hg can easily be done with thiourea and NaNO2 in a solution buffered with acetate. The metals are finally determined by GFAAS (Perkin Elmer 400, HGA-74). If the concentration of Pd in the buffered solution is not lower than 25 αg/ml, the rate of recovery of Pd is over 90%, except in the presence of Ru. Otherwise the precipitate of the Pd-complex is delayed and not complete. The same effect of retardation occurs if Au is involved. Therefore, high concentrations of Au and Ru in the solution should be absent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00474251
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  • 4
    Electronic Resource
    Electronic Resource
    Umlagerung von quartären Allyl-, Benzyl- und Propargyl-hydraziniumsalzen (1970)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 103 (1970), S. 2052-2061 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Rearrangement of Quaternary Allyl-, Benzyl-, and Propargylhydrazinium Salts1,1-Disubstituted 1-allyl- and 1-benzylhydrazinium chlorides rearrange in the presence of alkali to form 1,1-disubstituted 2-allyl- and 2-benzylhydrazines, respectively, in good yields. When the reaction was applied to quaternary propargylhydrazinium salts, rearrangement took place only to a small extent.
    Notes: 1.1-Disubstituierte 1-Allyl- und 1-Benzyl-hydraziniumchloride lassen sich in Gegenwart von Basen unter HCl-Abspaltung zu 1.1-disubstituierten 2-Allyl- bzw. 2-Benzyl-hydrazinen umlagern. Die Reaktion verläuft zum Teil mit sehr guten Ausbeuten. Bei quartären Propargyl-hydraziniumsalzen wird eine Umlagerung nur als Nebenreaktion beobachtet.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19701030707
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  • 5
    Electronic Resource
    Electronic Resource
    Synthese und Reaktionen substituierter 3-Oxo-1,2,6-thiadiazin-1,1-dioxide (1979)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 950-958 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Reactions of Substituted 3-0xo-1,2,6-thiadiazine 1,l-Dioxides3-Oxo-1,2,6-thiadiazine 1,1-dioxides 4 are synthesized from monosubstituted sulfamides 2 and methyl methoxymethylenemalonates (1). 2,5-Disubstituted 3-oxo-1,2,6-thiadiazine 1,1-dioxides 10 are prepared by reaction of alkylsulfamoyl chlorides 7 with aminoalkylidenemalonates 6. Halogenation, methylation and substitution reactions of 10 are described.
    Notes: Methoxymethylenmalonsäure-methylester (1) und monosubstituierte Sulfamide 2 setzen sich zu 3-Oxo-1,2,6-thiadiazin-1,1-dioxiden 4 um. 2,5-Disubstituierte 3-Oxo-1,2,6-thiadiazin-1,1-dioxide 10 werden aus Aminoalkylidenmalonsäureestern 6 und Alkylsulfaminsäurechloriden 7 erhalten. Es werden Halogenierung, Methylierung sowie Substitutionsreaktionen von 10 beschrieben.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.197919790705
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  • 6
    Electronic Resource
    Electronic Resource
    Neue Reagenzien zur Entkomplexierung kupfergeschützter Aminosäuren (1987)
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1987 (1987), S. 1115-1116 
    Details
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New Reagents to Decompose Copper Complexes of Amino AcidsThe use of N,N-dialkyl-N′-(benzoyl)thioureas in ethanol is an effective method to decompose copper complexes of amino acids. The reaction gives optimal yields, and no racemisation is observed. Furthermore, the recovery of the thiourea derivatives is an important advantage of this method.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jlac.198719870882
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  • 7
    Electronic Resource
    Electronic Resource
    Stickstofflost-Verbindungen, I. Mitteil.: β-Oxy- und β-Chlor-äthyl-Derivate des Nicotin- und Isonicotinsäureamids (1954)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 87 (1954), S. 1628-1631 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Darstellung einiger Mono- und Bis-[β-oxy-äthyl]- und -[β-chlor-äthyl]-Derivate des Nicotinsäure- und des Isonicotinsäureamids wird beschrieben, von denen besonders die β-Chlor-äthyl-Verbindungen wegen carcinokoytischer Eigenschaften von Interesse erscheinen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19540871105
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  • 8
    Electronic Resource
    Electronic Resource
    Zur Thermochromie und Konstitution unsymmetrischer [Hydroxy-alkylamino]-p-benzochinone, I Synthese, Eigenschaften und Konstitutionsabhängigkeit von Derivaten des p-Benzochinons (1959)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 92 (1959), S. 257-267 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Reaktion von Benzochinon-(1.4) mit einer Reihe sekundärer β-Hydroxyäthylamine führt vorwiegend zu N-substituierten 2-[β-Hydroxy-äthylamino]-benzochinonen-(1.4) (I). Diese einfach substituierten unsymmetrischen Benzochinone-(1.4) zeigen gegenüber anderen vergleichbaren p-Benzochinon-Substitutionsprodukten markante Abweichungen in ihren Eigenschaften, wie Thermo-, Solvato-, Piezochromie, Fluoreszenz, polarographische Doppelstufen, Alkalilöslichkeit. Die Synthese und die Eigenschaften dieser Verbindungen werden beschrieben.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19590920202
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  • 9
    Electronic Resource
    Electronic Resource
    Stickstofflost-Verbindungen, II. Mitteil.I. Mitteil. s. vorstehende Abhandlung (Chem. Ber. 87, 1628 [1954]).: Stickstofflost-Verbindungen mit Antihistamin-Struktur (1954)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 87 (1954), S. 1632-1634 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Es werden die Darstellungen einiger Stickstofflost-Verbindungen beschrieben, die konstitutionsmäßig einer Kombination der sog. „Antihistamin Strukturen“ des Äthylendiamin- und Colamin-Typs mit der „N-Lost-Struktur“ gleichkommen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19540871106
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  • 10
    Electronic Resource
    Electronic Resource
    Zur Thermochromie und Konstitution unsymmetrischer [Hydroxy-alkylamino]-p-benzochinone, II. Variationen in der Chinon- und der Aminoalkohol-Komponente (1959)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 92 (1959), S. 1789-1797 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: An Hand von Untersuchungen der Reaktionen zwischen verschiedenartigen Chinonen und verschiedenartigen Aminkomponenten wird die Konstitutionsspezifität der tert. 2-[β-Hydroxy-äthylamino]-benzochinone-(1.4) mit ihrer Thermochromie und sonstigen auffallenden Eigenschaften festgelegt. Die chemische und physikalische Untersuchung der lösungsmittel- und temperaturabhängigen Gleichgewichte gestattet Schlußfolgerungen bezüglich der Komponenten dieses thermochromen Systems. Maßgeblich für das Verhalten dieser Verbindungsklasse dürfte vermutlich ein Chinol/Chinon-Gleichgewicht sein.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19590920809
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