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  • 1
    Electronic Resource
    Electronic Resource
    Atomorbitale (1978)
    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 12 (1978), S. 23-26 
    Details
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 30 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ciuz.19780120104
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  • 2
    Electronic Resource
    Electronic Resource
    Competition between degradation and orientation in semicrystalline polymersPaper presented at the 19th Colloquim of Danubian Countries on “Atmospheric Aging and Stabilization of Polymers” in Prague, July 25-27, 1989 (1990)
    Weinheim : Wiley-Blackwell
    Angewandte Makromolekulare Chemie 176 (1990), S. 93-104 
    Details
    ISSN: 0003-3146
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Notes: This lecture summarizes some recent results and ideas about interrelations between degradation and mechanical behaviour of polyolefins. Aspects of the heterogeneous nature of oxidative degradation in the solid state, the feedback mechanism in degradation, effects of morphology, particularly orientation, on the degradation process, and the influence of degradation on plasticity and on the ultimate mechanical behaviour are discussed.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/apmc.1990.051760108
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  • 3
    Electronic Resource
    Electronic Resource
    1.3-Dipolare Cycloadditionen, 62. Benzonitril-[4-nitro-benzylid] und seine Reaktionen mit CC-Doppel- und CC-Dreifachbindungen (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 1258-1278 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1.3-Dipolar Cycloadditions, 62. Benzonitrile 4-Nitrobenzylide and its Reactions with CC-Double and Triple BondsThe first representative of the class of nitrile ylides, benzonitrile 4-nitrobenzylide, was generated in a small equilibrium concentration from N-[4-nitrobenzyl]-benzimidoyl chloride (1) by HCl elimination with triethylamine. Cycloadditions to methyl propiolate, ethyl phenylpropiolate and dimethyl acetylenedicarboxylate in situ furnish pyrroles regiospecifically whereas the reactions with methyl acrylate, acrylonitrile and norbornene give pairs of diastereomeric 1-pyrrolines in good yields. Dimethyl fumarate, 1.4-naphthoquinone and acenaphthylene serve as further dipolarophiles. - 4-Nitro-N-benzylbenzimidoyl chloride (27) tautomerizes to 1 on catalysis by triethylamine.
    Notes: Der erste Vertreter der Klasse der Nitril-ylide, das Benzonitril-[4-nitro-benzylid], wurde aus dem N-[4-Nitro-benzyl]-benzimidoylchlorid (1) durch HCl-Abspaltung mit Triäthylamin im Rahmen eines Gleichgewichts freigesetzt und in situ Cycloadditionen zugeführt. Aus Propiolsäure-methylester, Phenylpropiolsäure-äthylester und Acetylendicarbonsäure-dimethylester entstehen regiospezifisch Pyrrole, während die Umsetzungen mit Acrylsäure-methylester, Acrylnitril und Norbornen in guter Ausbeute Paare von diastereomeren Δ1-Pyrrolinen einheitlicher Additionsrichtung ergeben. Fumarsäure-dimethylester, Naphthochinon-(1.4) und Acenaphthylen dienen als weitere Dipolarophile. - 4-Nitro-N-benzyl-benzimidoylchlorid (27) isomerisiert unter Triäthylamin-Katalyse zu 1.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050419
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  • 4
    Electronic Resource
    Electronic Resource
    Eine Tautomerie bei Imidsäure-chloriden (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 1296-1306 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tautomerism in Imidoyl ChloridesN-[4-Nitrobenzyl]-benzimidoyl chloride (2) and 4-nitro-N-benzyl-benzimidoyl chloride in the presence of triethylamine in benzene establish a 92 : 8 equilibrium. Triethylamine deprotonates 2 and 4 in dipolar aprotic solvents at low temperature to produce blue carbanions. The tautomerization 2 ⇋ 4 takes place via α-chloroalkylazomethines, which occur in the tautomeric mixture to the extent of 8-10% and can be hydrolyzed to benzaldehyde and 4-nitro-benzaldehyde. The base-catalyzed tautomerization 2 ⇋ 4 is suppressed in the presence of 2.4-dinitrophenylhydrazine, which converts the afore-mentioned intermediates into an equimolar mixture of benzaldehyde- and 4-nitrobenzaldehyde-[2.4-dinitrophenylhydrazone].
    Notes: N-[4-Nitro-benzyl]-benzimidoylchlorid (2) und 4-Nitro-N-benzyl-benzimidoylchlorid (4) bilden in Gegenwart von Triäthylamin in Benzol ein 92 : 8-Tautomerie-Gleichgewicht. Bei tiefer Temperatur im dipolar-aprotischen Solvens werden 2 und 4 mit Triäthylamin zu blauen Carbanionen deprotoniert. Die Tautomerie 2 ⇋ 4 wird über α-Chloralkyl-azomethine vermittelt, die im Gleichgewicht zu 8-10% auftreten und bei Hydrolyse Benzaldehyd und 4-Nitro-benzaldehyd liefern. Die triäthylamin-katalysierte Tautomerisierung 2 ⇋ 4 läßt sich in Gegenwart von 2.4-Dinitro-phenylhydrazin unterdrücken; die erwähnten Zwischenstufen werden abgefangen und in Benzaldehyd- und 4-Nitro-benzaldehyd-[2.4-dinitro-phenylhydrazon] übergeführt.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050421
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  • 5
    Electronic Resource
    Electronic Resource
    1.3-Dipolare Cycloadditionen, 63. Die Anlagerung aromatischer Nitril-ylide an Carbonylverbindungen5) (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 1279-1295 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1.3-Dipolar Cycloadditions, 63. The Addition of Aromatic Nitrile Ylides to Carbonyl CompoundsBenzonitrile 4-nitrobenzylide and 4-nitrobenzonitrile benzylide, generated from the imidoyl chlorides 1 and 11 by 1.3-elimination of HCl with triethylamine, combine smoothly with benzaldehyde or diethyl mesoxalate, which are active dipolarophiles. The tautomerization 1 ⇋ 11 is suppressed. The regiospecific cycloaddition to benzaldehyde results in pairs of stereoisomeric 3-oxazolines. In contrast, the nitrile ylides add to mesoxalic ester in both possible directions to furnish 2- and 3-oxazolines. The formation of two oxazole derivatives from the afore-mentioned nitrile ylides and benzoyl chloride is explainable by cycloaddition via chloro-dihydrooxazoles, but can also be explained by 1.5-dipolar cyclization of benzoylated nitrile ylides.
    Notes: Benzonitril-[4-nitro-benzylid] und 4-Nitro-benzonitril-benzylid, die aus den Imidoylchloriden 1 und 11 durch 1.3-Eliminierung von HCl mit Triäthylamin freigesetzt werden, vereinigen sich leicht mit Benzaldehyd oder Mesoxalsäure-diäthylester, die aktive Dipolarophile sind. Die Einstellung des Tautomeriegleichgewichts 1 ⇋ 11 wird dabei unterdrückt. Aus der Cycloaddition mit Benzaldehyd gehen Paare stereoisomerer Δ3-Oxazoline hervor, einer einheitlichen Additionsrichtung entsprechend. An Mesoxalsäureester lagern sich dagegen die Nitril-ylide in beiden möglichen Richtungen an, wobei Δ2- und Δ3-Oxazoline entstehen. Die Bildung zweier Oxazol-Derivate aus den Nitril-yliden und Benzoylchlorid kann durch Cycloaddition über Chlor-dihydrooxazole oder über Benzoyl-nitril-ylide durch 1.5-Dipolare Cyclisierung stattfinden.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050420
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  • 6
    Electronic Resource
    Electronic Resource
    Metallorganische Lewis-Säuren, XV1). Cyclodimerisierung von 2-Butin und 2-Pentin an Pentacarbonyl-(tetrafluoroborato)rhenium zu einem koordinierten Methylencyclobuten-Derivat (1984)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 117 (1984), S. 3169-3174 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Organometallic Lewis Acids, XV1). Cyclodimerization of 2-Butyne and 2-Pentyne at Pentacarbonyl(tetrafluoroborato)rhenium to a Coordinated Methylenecyclobutene DerivativeThe reactions of pentacarbonyl(tetrafluoroborato)rhenium, (OC)5ReFBF3 (1a), with 2-butyne and 2-pentyne give the methylenecyclobutene complexes [(CO)5Re(C8H12)]+BF4- (2) and [(CO)5Re(C10H16)]+BF4- (3). From 2, 3 the methylenecyclobutene ligands can be liberated by halide ions.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19841171017
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  • 7
    Electronic Resource
    Electronic Resource
    Kohlenwasserstoffverbrückte Metallkomplexe, XVIII. Heterometallische Ethylen-verbrückte Komplexe (OC)5ReCH2CH2Mn(CO)5, (OC)5ReCH2CH2Ru(CO)2Cp, (OC)5ReCH2CH2Os(CO)4CH2CH2Re(CO)5 und (OC)5ReCH2CH2CH2Os(CO)4Os(CO)4(CO)4Os(CO)4CH2CH2Re(CO)5 (1991)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 124 (1991), S. 1059-1063 
    Details
    ISSN: 0009-2940
    Keywords: Ethylene-bridged metal complexes ; Ethanediyl complexes ; Manganese, Rhenium, Ruthenium, Osmium carbonyls ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Hydrocarbon-Bridged Metal complexes, XVIII. - Heterometallic Ethylene-Bridged Complexes (OC)5ReCH2CH2Mn(CO)5, (OC)5ReCH2CH2Ru(CO)2Cp, (OC)5ReCH2CH2Os(CO)4CH2CH2Re(CO)5 and (OC)5ReCH2CH2CH2Os(CO)4Os(CO)4(CO)4Os(CO)4CH2CH2Re(CO)5Addition of [(OC)5Re(C2H4)]+ to the carbonylmetallates [Mn(CO)5]-, [RuCp(CO)2]-, [Os(CO)4]2-, [Os3(CO)12]2- affords the title complexes in a directed way. The dynamic behaviour of (OC)5ReCH2CH2Mn(CO)5 in solution is attributed to a dyotropic exchange of the pentacarbonylmetal groups on the CH2CH2 bridge.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19911240512
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  • 8
    Electronic Resource
    Electronic Resource
    Metallorganische Lewis-Säuren, XVI. Reaktionen von Pentacarbonyl(tetrafluoroborato)rhenium(I) mit einfachen und komplexen Anionen (1985)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 118 (1985), S. 3830-3848 
    Details
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organometallic Lewis Acids, XVI. Reactions of Pentacarbonyl(tetrafluoroborato)rhenium(I) with Simple and Complex AnionsA series of monomeric complexes (OC)5ReX 1b - h (X = SCN, SeCN, ONO2, NO2, O2CH, p-SC6H4NO2, CN) and of ligand bridged complexes (OC)5ReXRe(CO)5 4 - 6 (X = oxalate, quadratate, tetrathioquadratate), [(OC)5ReXRe(CO)5]+BF4- 11, 12 (X = CN, OC(H)O) has been obtained from (OC)5ReFBF3. Reaction of (OC)5ReCH3 with Ph3C+PF6- or HPF6 · Et2O yields the fluoro bridged complex [(OC)5ReFRe(CO)5]+PF6- (3) which reacts with acetonitrile to produce (OC)5ReF (1a) and [(OC)5Re(NCCH3)]+PF6-. The Lewis acid “Re(CO)5+” can be added to the N- or S-atom of cyano- and isothiocyanato complexes to give NCAuCNRe(CO)5 (7), [(OC)5ReNCAuCNRe(CO)5]+ BF4- (8), (NC)2Pt[CNRe(CO)5]2 (9), [Pt[CNRe(CO)5]4]2+ (BF4-)2 (10), and (SCN)3Cr[NCSRe(CO)5]3 (13), respectively. From the reaction of (OC)5ReFBF3 with aqueous alkali a tetrameric μ3-carbon dioxide bridged complex [(OC)4Re(CO2)Re(CO)5]2 (15) has been obtained. The dihydrogen sulfide complex [(OC)5Re(SH2)]+BF4- (2) is formed from (OC)5ReFBF3 and H2S.
    Notes: Eine Reihe von monomeren Komplexen (OC)5ReX 1b - h (X = SCN, SeCN, ONO2, NO2, O2CH, p-SC6H4NO2, CN) und von Ligand-verbrückten Komplexen (OC)5ReXRe(CO)5 4 - 6 (X = Oxalat, Quadratat, Tetrathioquadratat), [(OC)5ReXRe(CO)5]+BF4- 11, 12 (X = CN, OC(H)O) wird aus (OC)5ReFBF3 erhalten. Die Umsetzung von (OC)5ReCH3 mit Ph3C+PF6- oder HPF6 · Et2O führt zu [(OC)5ReFRe(CO)5]+PF6- (3), dessen Fluorobrücke mit Acetonitril unter Bildung von (OC)5ReF (1a) und [(OC)5Re(NCCH3)]+PF6- gespalten wird. Die Lewis-Säure „(OC)5Re+“ läßt sich an das N- bzw. S-Atom von Cyano- bzw. Isothiocyanato-Komplexen addieren, wobei NCAuCNRe(CO)5 (7), [(OC)5ReNCAuCNRe(CO)5]+BF4-), (NC)2Pt[CNRe(CO)5]2 (9) und [Pt[CNRe(CO)5]4]2+ (BF4-)2 (10) sowie (SCN)3Cr[NCSRe(CO)5]3 (13) isoliert wurden. Die Umsetzung von (OC)5ReFBF3 mit wäßriger Alkali-Lösung liefert einen tetrameren μ3-Kohlendioxid-verbrückten Komplex [(OC)4Re(CO2)Re(CO)5]2 (15). Der Dihydrogensulfid-Komplex [(OC)5Re(SH2)]+BF4- (2) bildet sich aus (OC)5ReFBF3 und H2S.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19851180933
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  • 9
    Electronic Resource
    Electronic Resource
    1.3-Dipolare Cycloadditionen, 64. Weitere Umsetzungen von Nitril-yliden mit Hetero-Mehrfachbindungen (1972)
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 105 (1972), S. 1307-1323 
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    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1.3-Dipolar Cycloadditions, 64. Further Reactions of Nitrile Ylides with Hetero-multiple BondsThe products from cycloaddition of benzonitrile 4-nitrobenzylide (2) to the CN triple bond (ethyl cyanoformate, aryl cyanate), the CN double bond (benzylidenemethylamine) and the CS double bond (methyl dithiobenzoate and thionbenzoate, trithiocarbonic and thioncarbonicester) were structurally elucidated. The addition to nitrosobenzene is followed by a cycloreversion to give nitrone - nitrile. Nitrile ylides, nitrile imines and diazoalkanes are compared in their directions of cycloaddition.
    Notes: Die Cycloaddukte des Benzonitril-[4-nitro-benzylids] (2) an die CN-Dreifachbindung (Cyanameisensäureester, Aryl-cyanat), die CN-Doppelbindung (N-Benzyliden-methylamin) und die CS-Doppelbindung (Dithiobenzoesäureester, Thionbenzoesäureester, Trithiokohlensäureester, Thionkohlensäureester) werden strukturell gesichert. Der Anlagerung an Nitrosobenzol folgt eine Cycloreversion zu Nitron - Nitril. Die bei den Nitril-ylid-Cycloadditionen beobachteten Orientierungen werden mit denen des Diphenylnitrilimins und der Diazoalkane verglichen.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cber.19721050422
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  • 10
    Electronic Resource
    Electronic Resource
    Handbuch der Färberei und anderer Prozesse der Textilveredlung, von Albert Schaeffer. Stuttgart, Konradin-Verlag; Robert Kohlhammer, 1949. 8°. Vorgesehen 4 Bde., bisher ersch. Bd. I Technischer Teil, XX, 638 S., 158 Abb. u. Bd. II Wissenschaftlicher Teil, 240 S., 42 Abb., zus. DM 60.- (1950)
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 62 (1950), S. 103-103 
    Details
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/ange.19500620417
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