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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1983 (1983), S. 1598-1607 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Sulfur Compounds in Crude Oil, III. - Dihydrodiindeno[b,d]thiophenesSyntheses to the dihydrodiindeno[b,d]thiophenes 1-3 have been studied. 1-3 were prepared by thermolysis of 8H-indeno[1,2-d]-1,2,3-thiadiazole (10) or 4H-indeno[2,1-d]-1,2,3-thiadiazole (13) or by reduction of the corresponding diketones 17, 19, and 21 which were obtained by thermolysis of indeno[1,2-d]-1,2,3-thiadiazol-8-one (16) or from 2,3-dichloroinden-1-one (23) with Na2S. Mechanisms with analogous intermediates explain the formation of the indenothiphenes. - Another synthesis of diindeno[1,2-b:2′,1′-d]thiophene-10,11-dione (21) starts from 2,5-diphenyl-3,4-thiophenedicarboxylic acid (29). - 10,11-Dihydrodiindeno[1,2-b:2′,1′-d]thiophene (3) is the known sulfurization product of hydrindene, the structure of 3 is corrected.
    Notes: Synthesen zu den Dihydrodiindeno[b,d]thiophenen 1-3 wurden untersucht. 1-3 entstehen bei der Thermolyse des 8H-Indeno[1,2-d]1,2,3-thiadiazols (10) oder 4H-Indeno[2,1-d]1,2,3-thiadiazols (13) oder durch Reduktion der zugehörigen Diketoverbindungen 17, 19 und 21, die zugänglich sind durch Thermolyse des Indeno[1,2-d]-1,2,3-thiadiazol-8-ons (16) oder aus 2,3-Dichlorinden-1-on (23) mit Na2S. Mechanismen mit analogen Intermediaten erklären die Bildung der Indenothiophene. - Eine weitere Synthese des Diindeno[1,2-b:2′,1′-d]thiophen-10,11-dions (21) geht von der 2,5-Diphenyl-3,4-thiophendicarbonsäure (29) aus. - 10,11-Dihydrodiindeno-[1,2-b:2′,1′-d]thiophen (3) ist das bekannte Schwefelungsprodukt des Indans; die Struktur von 3 wird richtiggestellt.
    Additional Material: 1 Tab.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 689-700 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dithiacyclopentenes, XXXIII. - Reactions of 1,3-Dithiole-2-thiones with N-Chloramides4-Phenyl-1,3-dithiole-2-thione (1a) and 2-thioxo-1,3-dithiole-4,5-dicarbonitrile (1c) react with N,N-dichloroamides - N,N-dichlorobenzenesulfonamides 2-4, N,N-dichlorosulfamides 5, 6, N,N-dichloroethylurethane (7), N,N-dichloro-o-nitrobenzamide (8) - to give N-(1,3-dithiol)-2-ylidene)amides 17-23.
    Notes: 4-Phenyl-1,3-dithiol-2-thion (1a) und 2-Thioxo-1,3-dithiol-4,5-dicarbonitril (1c) reagieren mit N,N-Dichloramiden - N,N-Dichlorbenzolsulfonamide 2-4, N,N-Dichlorsulfamide 5,6, N,N-Dichlorethylurethan (7), N,N-Dichlor-o-nitrobenzamid (8) - zu den N-(1,3-Dithiol,2-yliden)-amiden 17-23.
    Additional Material: 3 Ill.
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1973 (1973), S. 241-246 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On 1,2-Dithiacyclopentenes, XXI1). - N-(3H-1,2-Dithiol-3-ylidene)benzamides from 3-Chloro-1,2-dithiolium ChloridesWith the N, N-dichloronitrobenzamides 2a and 2b the 3-chloro-1,2-dithiolium chlorides 1a and 1b react to N-(3H-1,2-dithiol-3-ylidene)benzamides 3. With nucleophilic compounds N-(5-chloro-3H-1,2-dithiol-3-ylidene)benzamides yield the substitution products 5 and 6.
    Notes: 3-Chlor-1,2-dithiolium-chloride 1a und 1b reagieren mit N,N-Dichlor-nitrobenzamiden 2a und 2b zu N-(3H-1,2-Dithiol-3-yliden)benzamiden 3. N-(5-Chlor-3H-1,2-dithiol-3-yliden)-benzamide liefern mit nucleophilen Verbindungen die Substitutionsprodukte 5 und 6.
    Additional Material: 3 Tab.
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1978 (1978), S. 387-397 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1,2-Dithiacyclopentenes, XXXII1).  -  Reactions of 3H-1,2-Dithiole-3-thiones with N-Chlorobenzamides5-Phenyl-3H-1,2-dithiole-3-thione (2) reacts with N,N-dichlorobenzamides 3 to give N-(3 H-1,2-dithiol-3-ylidene)benzamides 11 and 12 and with N-chlorobenzamides 1 to give N-benzoyl-S-(3H-1,2-dithiol-3-ylidene)sulfimides 7, respectively, which, on extrusion of sulfur, yield N-ylidenebenzamides 11. The mechanism has been studied.
    Notes: 5-Phenyl-3H-1,2-dithiol-3-thion (2) reagiert mit N,N-Dichlorbenzamiden 3 zu N-(3 H-1,2-Dithiol-3-yliden)benzamiden 11 und 12, mit N-Chlorbenzamiden 1 zu N-Benzoyl-S-(3H-1,2-dithiol-3-yliden)sulfimiden 7, die unter Schwefelabspaltung N-Ylidenbenzamide 11 liefern. Der Mechanismus wurde untersucht.
    Additional Material: 3 Ill.
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