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  • 1
    ISSN: 1434-4475
    Keywords: 1,6-Methano[10]annulene ; 2-Ethinyl-1,6-methano[10]annulene ; Trimethylsilylacetylene
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract 2-Trimethylsilylethinylated 1,6-methano[10]annulene1 a was obtained by reaction of 2-bromo-1,6-methano[10]annulene with trimethylsilylacetylene in the presence of bis-(triphenylphosphin-)-Pd (II) chloride and Cu(I) and also by reaction of 1,1-diiodo-2-(1,6-methano[10]annulene-2-yl)-ethene (2) withn-buthyl-lithium followed by hydrolysis.1 a reacts with 2N NaOH to 2-ethinyl-1,6-methano[10]annulene (1 b). 2,7- and 2,10-dibromo-1,6-methano[10]annulene can be substituted to give the trimethylsilylethinylated compounds3 a–6 a, which then can be transformed with 2N NaOH into the desilylated products3 b–5 b.
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  • 2
    ISSN: 1434-4475
    Keywords: 1,6-Methano[10]annulene ; Azo dyes ; 1,2,4-Triazine derivatives
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary Coupling reactions of the diazoniumbetaines2, 4, 6a, 6b, 6c with derivatives of 1,6-methano[10]annulene1a–c and/or β-naphthol7 yield the dyes3a–c, 5a, 5c, 8a–c, 9, 11. The syntheses of different triazine derivatives12a–c, 13a–c, 15, 16, and17a, 17c are described.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Chemie in unserer Zeit 4 (1970), S. 152-158 
    ISSN: 0009-2851
    Keywords: Chemistry ; Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 99 (1966), S. 239-243 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Chlorierung von Acylisothiocyanaten, N-Acyl-dithiocarbamidsäureestern sowie N-Acyl-dithiokohlensäureester-imiden führt zu Acylisocyanid-dichloriden; Phosphorpentachlorid reagiert mit Benzoylisocyanid-dichlorid zu α.α-Dichlor-benzylisocyanid-dichlorid, mit Acylisocyanaten zu N-[α-Chlor-alkyliden]-carbamidsäurechloriden bzw. α.α-Dichlor-alkylisocyanaten. Benzoylisocyanid-dichlorid setzt sich mit Cyclohexylamin zu N.N′-Dicyclohexyl-N″-benzoyl-guanidin, mit Dithioglykol zu 2-Benzoylimino-1.3-dithiolan um.
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 100 (1967), S. 736-740 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Synthese der Tetrazolylmercapto-essigsäure-azide 5a-c und Tetrazolylmercaptomethyl-isocyanate 6a-c wird beschrieben.
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  • 6
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Sulfur Diimides with Bifunctional Acyl Chlorides, II: Syntheses of 5-Oxo-5H-1,3λ4,2,4-dithiadiazole and 5-Acylimino-5H-1,3λ4,2,4-dithiadiazolesAcyl isothiocyanates react with chlorine to give the N-acyl-1-(chlorothio)formimidoyl chlorides 1d-h; N,N′-bis(trimethylsilyl)sulfur diimide (2) reacts with 1-(chlorothio)formyl chloride (3) to yield 5-oxo-5H-1,3λ4,2,4-dithiadiazole (4), with 1a-h to form the 5-acylimino-5H-1,3λ4,2,4-dithiadiazoles 6a-h. 6d was alkylated at the carbonyl group by methyl fluorosulfonate (7) to give 8. The X-ray structure analysis of 6b is discussed.
    Notes: Die Reaktion von Chlor mit Acyl-isothiocyanaten führt zu den N-Acyl-1-(chlorthio)formimidoylchloriden 1d-h; N,N′-Bis(trimethylsilyl)schwefeldiimid (2) konnte mit 1-(Chlorthio)formylchlorid (3) zu 5-Oxo-5H-1,3λ4,2,4-dithiadiazol (4) gespalten werden, mit 1a-h zu 5-Acylimino-5H-1,3λ4,2,4-dithiadiazolen 6a-h; 6d wurde mit Fluorsulfonsäure-methylester (7) zu 8 alkyliert. Über die Röntgenstrukturanalyse von 6b wird berichtet.
    Additional Material: 1 Ill.
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 100 (1967), S. 698-700 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 110 (1977), S. 3149-3160 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Reactions of Sulfur Diimides with Bifunctional Acyl Chlorides, I. Synthesis of 1λ4,2,5-Thiadiazolidines and their Sulfonium SaltsOxalyl chloride (2) reacts with the sulfur diimides 1a-d to give the compounds 3a-d which are alkylated by triethyloxonium tetrafluoroborate to yield the sulfonium salts 4a, c, d. The sulfur diimides 5a, b, however, react with 2 to form the dichloro derivatives 6a, b which can be transformed into the S-oxides 7a, b and the 1,2,5-thiadiazolidine-3,4-diones 8a, b. The synthesis of unknown asymmetrical sulfur diimides 9-13 and the results of X-ray structure analysis are reported.
    Notes: Die Reaktion von Oxalylchlorid (2) mit Schwefeldiimiden 1a-d führt zu den Verbindungen 3a-d, welche mit Triethyloxonium-tetrafluoroborat zu den Sulfoniumsalzen 4a, c, d alkyliert werden konnten. Die Schwefeldiimide 5a, b reagieren hingegen mit 2 zu den Dichlorderivaten 6a, b, welche in die entsprechenden S-Oxide 7a, b sowie 1,2,5-Thiadiazolidin-3,4-dione 8a, b umgewandelt wurden. Über die Herstellung neuer unsymmetrischer Schwefeldiimide 9-13 und die Ergebnisse der Röntgenstrukturanalyse von 3a wird berichtet.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 111 (1978), S. 3346-3353 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis and Properties of 3,7-Diethoxy-4H,8H-benzo[1,2-c:4,5-c′]diisoxazole-4,8-dioneSodium azide reacts with diethyl 2,5-dichloro-3,6-dioxo-1,4-cyclohexadiene-1,4-dicarboxylate (1a) to give the 2,5-diazido derivative 1b. The reaction of 1b with aniline leads to the dianilino derivative 1c, whereas thermolysis of 1b leads to elimination of 2 mols of N2 and formation of the title compound 2a. With piperidine 2a yields 2b and with ammonia the derivative 2c. The results of an X-ray structure analysis of 2a are reported.
    Notes: Die Reaktion von Natriumazid mit 2,5-Dichlor-3,6-dioxo-1,4-cyclohexadien-1,4-dicarbonsäurediethylester (1a) führt zum 2,5-Diazido-Derivat 1b, das mit Anilin in das Dianilino-Derivat 1c und durch Thermolyse unter Eliminierung von 2 Mol N2 in die Titelverbindung 2a übergeführt wurde. Diese liefert mit Piperidin 2b und mit Ammoniak 2c. Über die Ergebnisse der Röntgenstrukturanalyse von 2a wird berichtet.
    Additional Material: 3 Ill.
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 99 (1966), S. 1252-1257 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die Chlorierung von N-[Bis-methylmercapto-methylen]-Arylsulfonamiden bzw.-alkylsulfonamiden führt zu N-Dichlormethylen- bzw. N-[Chlor-methylmercapto-methylen]-sulfonamiden. N-Dichlormethylen-benzolsulfonamid setzt sich mit Äthylmercaptan zu N-[Bis-äthylmercaptomethylen]-benzolsulfonamid, mit Aminen zu N-Diaminomethylen-benzolsulfonamiden (N-Benzolsulfonyl-guanidinen), mit Trialkylphosphiten zu N-[Bis-dialkoxyphosphinyl-methylen]-benzolsulfonamiden und mit Alkylammoniumchloriden zu N-Benzolsulfonyl-carbodiimiden um.
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