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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    European journal of pediatrics 135 (1980), S. 181-187 
    ISSN: 1432-1076
    Keywords: Cerebral palsy ; Oral manifestation ; Structure-activity relationship ; Asymmetric (asymmetry)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Twenty-six children with cerebral palsy were examined with respect to structural asymmetry of the mouth. In 19 children there were clear cut correlations between symmetry/asymmetry of voluntary function and the oral findings. Patients with symmetrical patterns of movements had symmetrical denition, while in those with asymmetrical function the favoured side corresponded to the side with structural changes. Apparent exceptions to this rule in 7 children could be resolved in 6 by analysis of their complex case histories. Fifty normal controls showed oral asymmetries of nearly identical frequency and magnitude. In this respect there is no difference between the normal and the handicapped group.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1618-2650
    Keywords: Polarographie, rechnerunterstützt ; Aufbau der Steuerung
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Es werden Möglichkeiten der Kopplung und Steuerung in der Polarographie mit programmierbaren Tischrechnern aufgezeigt. Die Blockdiagramme der Gerätekombinationen und der Steuerlogik werden dargestellt und erläutert. Auf neue Auswertemöglichkeiten solcher Systeme wird kurz hingewiesen.
    Notes: Summary The possibility of computerizing polarography is pointed out. Programmable desk-top computers may be used for data transfer and also for controlling the instrument. The equipment and some details of the switching unit are explained and are given as main diagrams. New methods of evaluation in polarography are mentioned.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1618-2650
    Keywords: Polarographie ; rechnerunterstützt, Festlegung des Basislinien-Verlaufs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die rechnerunterstützte Polarographie setzt eine mit mathematischen Kriterien beschreibbare Ermittlung der Basislinien voraus. Es werden zwei Modellfunktionen beschrieben, die sich für diesen Zweck eignen: eine Exponentialfunktion mit drei Parametern und ein Polynom 3. Grades. Bei Festlegung geeigneter Nebenbedingungen ist das Polynom 3. Grades unempfindlicher gegenüber numerischen Problemen und besitzt zudem den Vorteil wesentlich kürzerer Rechenzeiten. An verschiedenen Beispielen wird dieses Verfahren diskutiert.
    Notes: Summary In the computer controlled evaluation in polarography one problem is to find mathematical criteria to approximate the baseline. Two modell functions are described in this paper: a three-parametric exponential function and the third-degree polynomial. It is possible to give some conditions for using the polynomial. The advantages are in this case the shorter timer required for all calculations and the higher stability towards numerical problems. Some examples are given to discuss the proposed method.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New Synthesis of Dimethyl-cinnamoylimino-dithiocarboxylate and Reactions with NucleophilesA new general synthesis of dimethyl-cinnamoylimino-dithiocarboxylate 1d is possible by reaction of 4-nitro-cinnamoylamide with carbon disulfide in the presence of sodium hydride and following alkylation. With the unsubstituted dimethyl-cinnamoylimino-dithiocarboxylate 10 is in-vestigated the reaction behavior with nucleophilic compounds. The treatment of 1c with primary amines, respectively, by mono- and disubstitution of the methylthio groups yields isothiourea 2 or guanidines 3. Benzocondensed heterocycles are formed by reaction of 1c with o-bifunctional nucleo-philes.The compounds 5, 6 and 7 have been synthesized from 1c with cysteamine, p-phenylenediamine and ethylenediamine.The oxadiazole 8 and isothiosemicarbazide 9 are obtained by reaction of the dithioester 1c with hydrazides. On the other hand cyclisation to the 1,2,4-triazole 11 over the intermediate 10 and to the 1,3,5-triazine 12 are possible.The reaction of 1c with carbanions in a basic medium affords acrylic derivatives 13.In the same way we isolated by reaction of dithioester 1c with a benzothiazolium salt the dark coloured compound 14. The physical properties of synthesized compounds are discussed by mass-, 1H-n.m.r.-, i.r.- and u.v.-spectra.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Synthesis and Reaction Behaviour of N-(3-Chlorobenzo[b]thiophene-2-carbonyl)-imino-dithiocarbonic Derivatives3-Chlorobenzo[b]thiophene-2-carbonyl-chloride 1 was treated with potassium rhodanide to afford the appropriate acyl isothiocyanate 3, which adds nucleophilic agents as amines and thioles in good yields.Addition of methanethiole and subsequent alkylation of the dithiocarbamate 7 gives S, S-dimethylimino-dithiocarbonate 8. 3-Chlorobenzo[b]thiophene-2-carboxamide 2 reacts with carbon disulphide and phenyl isothiocyanate by chlorine substitution and cyclisation to benzo[b]thieno[2, 3-e]thiazines 9, 10 or 11. The structure of the final products were determined by analytical and spectroscopical dates.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 1H- and 13C-N.M.R. Investigations of N-Acyl-imino-dithiocarbonic-S,S-dimethylester
    Additional Material: 3 Tab.
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  • 7
    Electronic Resource
    Electronic Resource
    New York, NY : Wiley-Blackwell
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reactions with N-Acylimino-dithiocarbonic-acid-diesters.Reactions of N-acylimino-dithiocarbonic-acid-S,S-diesters 1 with nucleophilic com-pounds present new possibilities to synthesize heterocycles. With amines 1a reacts by mono- and disubstitution, respectively, of methylthio-groups to isothioureas 2 and guanidines 3, with 1,2-bi-nucleophilic arenes to benzoheterocycles 4, with aliphatic diamines to imidazolidines 5, pyrimidines 6, diazepines 7 and the hexamethylene-diamine-derivatives 8. 1a reacts also with hydrazines to 1,2,4-triazoles 9 and with hydrazides to the thiosemicarbazones 10 or 1,3,4-oxadiazoles 11. Heterocyclisations of 1 with guanidines, thiourea, salts of thiourea and amidines give the 1,3,5-triazines 12, 14, 15 and 16. N-benzoyl-dithiocarbonic-acid-methylester -amid reacts with CH-acidic compounds to thiazoles 17. The structures of the final products are determined by i.r.-, 1H-n.m.r.-, u.v.- and mass-spectras.
    Additional Material: 9 Tab.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reaction Behaviour of Amides with Carbondisulphide and IsothiocyanatesReactions of substituted arylamides, hetarylamides and furylacrylicamide 1 with carbon disulphide present a possibility to synthesize imino-dithiocarbonic-S,S′-diester 5. The mechanism of the reaction and the reaction conditions are investigated. Quantum chemical investigations by simple HMO-method in connection with the experimental results describe the reaction in dependence upon the influence of substituent in 2- and 4-position to the phenylring. Further more is described the reaction of amide with isothiocyanates to thiourea 6 and isothiourea 7.The structures of the final products are determined by analytical dates.
    Additional Material: 4 Tab.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reactions of Dimethyl N-Aroyl(Hetaroyl)carbimidodithioates with Carbanions CH-acidic CompoundsReactions of dimethyl N-aroyl(hetaroyl)carbimidodithioates 1 with carbanions 2 present new possibilities to synthesize 3-acyl-amino-3-methylthio-2-subst.-acrylnitriles 3 by monosubstitution of methylthiogroup.The reaction of 1 with 2-alkyl-benzothiazolium salts 4 yield deeply coloured N-acyl-(2,3-dihydrobenzothiazole-2-yliden) thioacetimido acid-methylates 5 of the 2-subst.-benzothiazoliumperchlorates 6. The structures of the final products are determined by i.r.-, 1H.-n.m.r.- and u.v.-spectra.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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