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  • Analytical Chemistry and Spectroscopy  (4)
  • 2-(dimethylaminomethyl)ferrocenyl compounds  (3)
  • Auktionstheorie
  • C72
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  • 1
    Electronic Resource
    Electronic Resource
    Selected ion monitoring determination of mono- and bifunctional amines by using phosphorus-containing derivativesPresented in parts at the 17th International Symposium on ‘Advances in Chromatography’, Las Vegas, Nevada, USA (1982). (1983)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 10 (1983), S. 175-182 
    Details
    ISSN: 0306-042X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Numerous monofunctional amines have been reacted with dimethylthiophosphinic chloride to form stable derivatives. Their good gas chromatographic properties and abundant molecular ions afforded highly sensitive and specific detection by selected ion monitoring (SIM) down to the picogram level. Based upon this derivatization procedure, new methods for the determination of aniline in serum and urine by SIM were developed. The minimum detectable concentration of aniline was 500 pg ml-1. Linear response curves were obtained from 1.5 to 150 ng ml-1 using (2H5)aniline as the internal standard. Specific derivatization of a series of bifunctional amines was achieved with methyldichlorophosphine and sulfur resulting in the formation of stable phospholidine-thiones. These derivatives chromatograph well on nonpolar stationary phases, and their mass spectra exhibit abundant molecular ions. This derivatization reaction was applied to the quantification of ephedrine from urine and serum by SIM with (2H2)ephedrine as the internal standard. The detection limit of the method was 1 ng ml-1. The linearity was established in the range from 10 to 160 ng ml-1.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200100312
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  • 2
    Electronic Resource
    Electronic Resource
    Mass spectrometry of dimethylthiophosphinates of aromatic hydroxy compounds (1978)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 5 (1978), S. 302-311 
    Details
    ISSN: 0306-042X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The mass spectra of 20 differently substituted dimethylthiophosphinic esters of aromatic hydroxy compounds are presented. Fragmentation routes were investigated using high resolution mass measurements, decoupled metastable determinations and deuterium labelling. All compounds exhibited abundant molecular ions and typical phosphorus-containing ions. Characteristic elimination processes strongly dependent upon the respective type of substitution were observed. Due to their high stability, their great ease of formation and their good gas chromatographic properties these new types of derivatives are of special interest for establishing gas chromatography mass spectrometry profiles of acidic catecholamine metabolites.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200050406
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  • 3
    Electronic Resource
    Electronic Resource
    Steroid phosphorus compounds. V - mass spectrometry of phosphinic esters of monohydroxy steroidsAbbreviations: E1 = estrone; A = androsterone; 3αEt = 3α-etiocholanolone; 3βEt = 3β-etiocholanolone; DHEA = dehydroepiandrosterone; DHT = 5α-dihydrotestosterone: T = testosterone: PO, PS and P = the dimethylphosphinic, dimethylthiophosphinic and dimethylphosphinous ester groups of the corresponding hydroxy steroid, respectively. (1976)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 3 (1976), S. 64-70 
    Details
    ISSN: 1052-9306
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The mass spectra of the dimethylphosphinic, dimethylthiophosphinic and dimethylphosphinous ester derivatives of several monohydroxy steroids are reported. The fragmentations of the derivatized steroids largely depend on the nature of the the phosphorus-containing ester group. Phenolic ester derivatives exhibit the base peak at the molecular ion, whereas the spectra of the secondary phosphinic esters are dominated by very intense protonated phosphinic acid ions [Me2 P(XH)(OH)]+ at m/e 95 (X = O) or at m/e 111 (X = S). The present results also indicate the low ionization potential for the phosphinic ester group. Due to their good gas chromatographic properties, these steroid derivatives appear to be particularly suitable for gas chromatographic mass spectrometric analysis of biochemical materials.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200030205
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  • 4
    Electronic Resource
    Electronic Resource
    Rapid and simple direct determination of porphyrins in urine by ion-pair reversed-phase high performance liquid chromatography (1980)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 3 (1980), S. 85-86 
    Details
    ISSN: 0935-6304
    Keywords: Liquid chromatography, HPLC ; Ion-pair reversed-phase ; Free porphyrin carboxylic acids in urine, complete separation ; Quantitation within 4.4-5.4% precision ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240030206
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  • 5
    Electronic Resource
    Electronic Resource
    Beiträge zur Chemie der Alkylverbindungen von Übergangsmetallen. 58. Zur Kenntnis von 2-(Dimethylaminomethyl)ferrocenyl-Verbindungen des Vanadiums, Molybdäns, Wolframs, Thoriums und Urans (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 613 (1992), S. 88-92 
    Details
    ISSN: 0044-2313
    Keywords: Transition metal alkyl compounds ; vanadium ; molybdenum ; tungsten ; thorium ; uranium ; 2-(dimethylaminomethyl)ferrocenyl compounds ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to the Chemistry of Transition Metal Alkyl Compounds. 58 On 2-(Dimethylaminomethyl)ferrocenyl Compounds of Vanadium, Molybdenum, Tungsten, Thorium, and UraniumEarlier results according to which dimethylaminomethylferrocenyl groups (FcN) are able to form stable organometallic chelate compounds were confirmed by synthesis of the heterobimetallic chelate compounds (FcN)2VO · Li(acac) II, (FcN)MoO2(acac) III, (FcN)WOCl3 IV, (FcN)Th(acac)3 V, and (FcN)UO2(acac) VI from the corresponding metal acetylacetonates or oxidchlorides and (FcN)Li I. The new compounds were characterized by elemental analysis, the i.r., 1H-n.m.r., and electron spectra and by their effective magnetic moments.
    Notes: Frühere Befunde, wonach Dimethylaminomethylferrocenyl-Gruppen (FcN) zur Bildung stabiler Organoübergangsmetallchelate befähigt sind, wurden durch die Synthese der heterobimetallischen Chelatkomplexe (FcN)2VO · Li(acac) II, (FcN)MoO2(acac) III, (FcN)WOCl3 IV, (FcN)Th(acac)3 V und (FcN)UO2(acac) VI aus den betreffenden Metalloxidchloriden bzw. -acteylacetonaten und (FcN)Li I bestätigt.  -  Die erhaltenen Verbindungen wurden durch Elementaranalysen, IR-, 1H-NMR- und UV-VIS-Spektren sowie Bestimmung der effektiven magnetischen Momente charakterisiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926130115
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  • 6
    Electronic Resource
    Electronic Resource
    Beiträge zur Lanthanoidchemie. II. Zur Kenntnis von 2-(Dimethylaminomethyl)ferrocenyl-Verbindungen des Yttriums, Dysprosiums und Holmiums (1992)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 618 (1992), S. 163-167 
    Details
    ISSN: 0044-2313
    Keywords: Organolanthanide chemistry ; yttrium ; dysprosium ; holmium ; 2-(dimethylaminomethyl)ferrocenyl compounds ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contributions to Organolanthanide Chemistry. II. On 2-(dimethylaminomethyl)ferrocenyl Compounds of Yttrium, Dysprosium, and HolmiumEarly reports about the ability of the 2-(dimethylaminomethy1)ferrocenyl group to form stable heterobimetallic organolanthanide(III) compounds have been confirmed by the synthesis of the organolanthanide(III) derivatives (C5H5)2Ln(FcN) [Ln = Y (II), Dy (III), Ho (IV)], C5H5Dy(FcN)2 · 2,5 THF (V) und C5H5Ln(FcN)Cl [Ln = Dy (VI), Ho (VII)] from the corresponding cyclopentadienyllanthanide(III) chlorides (C5H5)2LnCl or C5H5LnCl2 resp. and (FcN)Li (I). The products have been characterized by elemental analyses, IR-, 1H-NMR, 13C-NMR and UV/Vis spectra as well as mass spectra and the determination of their effective magnetic moments.
    Notes: Frühere Befunde, wonach 2-(Dimethylaminomethyl)ferrocenyl-Gruppen (FcN) zur Bildung stabiler, heterobimetallischer Organolanthanoid(III)-Verbindungen befähigt sind, wurden durch die Synthese der Organoseltenerd(III)-Derivate (C5H5)2SE(FcN) [SE = Y (II), Dy (III), Ho (IV)], C5H5Dy(FcN)2 · 2,5 THF (V) und C5H5SE(FcN)Cl [SE = Dy (VI), Ho (VII)] aus den betreffenden Cyclopentadienylseltenerd(III)-chloriden (C5H5)2SECl bzw. C5H5SECl2 und (FcN)Li (I) bestätigt. Die erhaltenen Verbindungen wurden durch Elementaranalysen, IR-, 1H-NMR-, 13C-NMR- und UV-Vis-Spektren sowie durch Bestimmung der effektiven magnetischen Momente und die Aufnahme von Massenspektren charakterisiert.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19926180128
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  • 7
    Electronic Resource
    Electronic Resource
    Beiträge zur Lanthanoidchemie. III Zur Kenntnis von 2-(Dimethylaminomethyl)ferrocenyl-Verbindungen des Samariums und Yttriums (1993)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 619 (1993), S. 1957-1961 
    Details
    ISSN: 0044-2313
    Keywords: Organolanthanide chemistry, samarium, yttrium ; 2-(dimethylaminomethyl)ferrocenyl compounds ; heterobimetallic organolanthanide chelate complexes ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Contribution to Organolanthanoide Chemistry. III. On 2-(Dimethylaminomethyl)ferrocenyl Compounds of Samarium and YttriumEarlier results, indicating the ability of the bulky 2-(dimethylaminomethyl)ferrocenyl-group (FcN) to form thermocally stable, heterobimetallic organolanthanide compounds, were proved by the synthesis of organo-rare-earth derivatives (C5Me5)2Sm(FcN) (II), (C5H5)Sm(FcN)Cl (III), respectively (C5Me5)Y(FcN)Cl (IV) from the corresponding complex cyclopentadienyl rare-earth chlorides (C5Me5)2SmCl · KCl · THF, (C5H5)SmCl2 · THF and (C5Me5)YCl2 · KCl · 1,8 THF and 2-(dimethylaminomethyl)ferrocenyl lithium (FcN)Li (I) as organylating agent. The synthesized compounds were proved by elementary analysis, IR, 1H, 13C NMR and UV-VIS spectra as well as by measuring the magnetic moments and by mass spectroscopy.
    Notes: Frühere Befunde, wonach die voluminöse 2-(Dimethylaminomethyl)ferrocenyl-Gruppierung (FcN) zur Bildung thermisch stabiler, heterobimetallischer Organolanthanoid(III)-Verbindungen befähigt ist, wurden durch die Darstellung der Organoseltenerd(III)-Derivate (C5Me5)2Sm(FcN) (II), (C5H5)Sm(FcN)Cl (III) und (C5Me5)Y(FcN)Cl (IV) aus den betreffenden komplexen Cyclopentadienyl-Seltenerd(III)-chloriden (C5Me5)2SmCl · KCl · THF, (C5H5)SmCl2 · THF bzw. (C5Me5)YCl2 · KCl · 1,8 THF und 2-(Dimethylaminomethyl)ferrocenyl-Lithium (FcN)Li (I) als Organylierungsmittel bestätigt. Die erhaltenen Verbindungen wurden durch Elementaranalysen, IR-, 1H-NMR-, 13C-NMR- und UV-VIS-Spektren sowie durch die Ermittlung der effektiven magnetischen Momente und die Aufnahme der Massenspektren charakterisiert.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19936191122
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