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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 757-760 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thiazole Derivatives, V.- Reactions of the S-Potassium Salts of S-Alkyl N-Cyano(dithio-carboximidates) with Substituted Benzyl HalidesThe S-potassium salts 1 of S-alkyl N-cyano(dithiocarboximidates) react with substituted benzyl halides 2 to give the S.S'-diesters 3 of N-cyano(dithiocarboximidic acid). Some of these compounds can be cyclized to give the thiazoles 4.
    Notes: Die S-Kaliumsalze 1 der N-Cyan(dithiocarbonimidsäure)-S-ester reagieren mit substituierten Benzylhalogeniden 2 zu den S,S'-Diestern 3 der N-Cyan(dithiocarbonimidsäure). Einige dieser Ver-bindungen können zu den Thiazolen 4 cyclisiert werden.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1990 (1990), S. 115-117 
    ISSN: 0170-2041
    Keywords: Thiophenes ; Thieno[2,3-b]thiophenes ; Thiazolidines ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Reactions of Disodium Dicyanodithioacetate and Sodium Dicyanothioacetamides with Derivatives of γ-Bromocrotonic AcidThe dicyanodithioacetate 3 reacts with the derivatives of γ-bromocrotonic acid 4a and 4b to give the thieno-[2,3-b]thiophenes 5a and 5b. 3 can also be alkylated successively with two different alkylating reagents. In this way the compounds 5c, 6a, and 6b are prepared. Reactions of the dicyanothioacetamides 8a and 8b with 4a and 4b yield the thiazolidines 9a-d.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 764 (1973), S. 125-130 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 2-Alkylthio-4-aminothiazolesThe potassium alkyl cyanodithioimidocarbonates 5 react with the α-halogenocarbonyl compounds 2 to give the 4-aminothiazoles 7. The diesters of cyanodithioimidocarbonic acid are intermediates in this reaction. The IR, NMR and UV spectra of the compounds 7 are described.
    Notes: Die Kalium-alkyl-cyanimidodithiocarbonate 5 reagieren mit den α-Halogen-Carbonylverbindungen 2 zu den 4-Amino-thiazolen 7. Die Cyanimidodithiokohlensäure-dialkylester 6 treten als Zwischenverbindungen bei dieser Reaktion auf. Die IR, NMR und UV-Spektren der Verbindungen 7 werden beschrieben.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 731 (1970), S. 120-141 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Dualistic Behavior of Carbamoyl Isothiocyanates, I1)Carbamoyl chloride and sodium thiocyanate give aliphatic carbamoyl isothiocyanates R2N—CO—NCS (1) and mixed aliphatic-aromatic carbamoyl thiocyanates RArN—CO—SCN (2). Compounds 1 react with themselves (dimerization), to give thiadiazinonethiones 7; with nucleophilic compounds to give the carbamoyl thioureas 4; and with imines and isocyanides to give the N,S-heterocycles 10, 16, 20, or N,O-heterocycles 15. Sometimes, they react as carbamoyl isothiocyanates, sometimes as thiocarbamoyl isocyanates, and sometimes both forms play a role. Even relatively small structural changes can cause far-reaching changes in the course of reaction (e. g. with the addition of isocyanide to the oxazolethiones 15 or to the thiazolones 16).
    Notes: Durch Reaktion von Carbamoylchloriden mit Natriumrhodanid werden aliphatische Carbamoylsenföle R2N—CO—NCS (1) und aliphatisch-aromatische Carbamoylrhodanide RArN—CO—SCN (2) hergestellt. Die Umsetzungen von 1 ergeben mit sich selbst unter Dimerisierung die Thiadiazinonthione 7, mit nucleophilen HX-Verbindungen die Carbamoylthioharnstoffe 4, mit Iminen und Isonitrilen die N.S-Heterocyclen 10, 16, 20, bzw. die N.O-Heterocyclen 15. Dabei reagieren die Verbindungen manchmal als Carbamoylsenföle, manchmal als Thiocarbamoyl-isocyanate; manchmal kommen beide Formen zum Zuge. Schon relativ geringe Strukturänderungen können den Reaktionsverlauf ändern, z. B. bei der Isonitril-Addition zu den Oxazolthionen 15 oder den Thiazolonen 16.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1978 (1978), S. 1118-1122 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thiazole Derivatives, IV.  -  Reactions of Cyanimidodithiocarbonates and Salts of Cyanothioureas with Derivatives of γ-Bromocrotonic AcidThe Cyanimidodithiocarbonates 1, 6, and the salt 7 of the cyanothiourea react with derivatives of γ-bromocrotonic acid to give the 4-aminothiazoles 5a-k and 8a-b, respectively. In contrast, the salts 9 of the cyanothioureas 9 yield the thiazolidines 10a-e.
    Notes: Die Cyanimidodithiocarbonate 1 und 6 sowie das Cyanthioharnstoffsalz 7 reagieren mit γ-Bromcrotonsäurederivaten 4 zu den 4-Aminothiazolen 5a-k bzw. 8a-b. Dagegen ergeben die Cyanthioharnstoffsalze 9 die Thiazolidine 10a-e.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1977 (1977), S. 400-406 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Thiazole Derivatives, III. - Reactions of Cyanimidodithiocarbonates with α-ChloroacetamidesThe S-potassium S-alkyl cyanimidodithiocarbonates 1 react with the α-chloro acetamides 2a-d or 2n-r to give the 4-aminothiazoles 3 and with the N-aryl-α-chloro acetamides 2e-m to form the thiazolidones 4. The compounds 3 can also be synthesized from S,S-dipotassium cyanimidodithiocarbonate (5) and α-chloroacetamides or -anilides, respectively.
    Notes: Die s-Kalium-S-alkylcyanimidodithiocarbonate 1 reagieren mit den N-mono- und N,N-disubstituierten α-Chloracetamiden 2A-d oder 2n-r zu den 4-Aminothiazolen 3. Mit den N-Aryl-α-chloracetamiden 2e-m entstehen die Thiazolidone 4. Die Verbindungen 3 können auch aus S,S-Dikaliumcyanimidodithiocarbonat (5) und α-Chloracetamiden oder -aniliden erhalten werden.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1973 (1973), S. 1416-1417 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Note on the Reaction of Xanthane Hydride with Acetic Formic Anhydride5-Amino-1,2,4-dithiazole-3-thione (1, xanthane hydride) reacts with acetic formic anhydride (2) without solvent to give 5-formylamino-1,2,4-dithiazole-3-thione (3), and in pyridine to give a mixture of 3 and 5-acetylamino-1,2,4-dithiazole-3-thione (4).
    Notes: 5-Amino-1,2,4-dithiazol-3-thion (1, Xanthanwasserstoff) reagiert mit Ameisenessigsäureanhydrid (2) ohne Lösungsmittel zu 5-Formylamino-1,2,4-dithiazol-3-thion (3), in Pyridin zu einem Gemisch von 3 und 5-Acetylamino-1,2,4-dithiazol-3-thion (4).
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1975 (1975), S. 1018-1024 
    ISSN: 0075-4617
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Acylated Xanthane Hydrides, III. - Alkylation of 5-Acylamino-3H-l,2,4-dithiazole-3-thionesThe 5-acylamino-3H-l,2,4-dithiazoline-3-thiones (3) react with alkyl halides 4 to give the N-(5-alkylthio-3H-l,2,4-dithiazol-3-yliden)carboxamides 5. The IR-spectra of compounds 5 are discussed.
    Notes: Die 5-Acylamino-3H-l,2,4-dithiazol-3-thione (3) lassen sich mit Alkylhalogeniden 4 zu den N-(5-Alkylthio-3H- 1,2,4-dithiazol-3-yliden)carboxamiden 5 umsetzen. Die IR-Spektren der Verbindungen 5 werden diskutiert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1984 (1984), S. 1994-1997 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Thiazole Derivatives, VI.  -  Synthesis of thiazolo[4,5-d]-v-triazin-7(6H)-onesThe 2-alkylthio-, 2-alkylamino-, 2-anilino-, and 2-(N-methylanilino)-4-amino-5-thiazolecarboxamides 1a-j react with nitrous acid to give the thiazolo[4,5-d]-v-triazine-7(6H)-ones 2a-j. The compounds 2a and 2d can be methylated in position 6.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1989 (1989), S. 409-411 
    ISSN: 0170-2041
    Keywords: Thiazolo[4,5-d]pyrimidines ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Thiazole Derivatives, VII1). - Synthesis of Thiazolo[4,5-d]pyrimidine DerivativesThe 2-alkylthio-4-aminothiazoles 1a-k are converted into thiazolo[4,5-d]pyrimidines 2a-f, 3, 5, 7a, and 7b. Compound 1a reacts with formamide to give 2a after two hours at 200°C, but after eight hours at 200°C 3 is the resulting product. Reactions of 1b-e with formic acid and of 1f with formic acid and water give 2a and 2c-e, whereas 2b and 2f are obtained from 1b and 1e and acetylacetone. 1f reacts with formamide to yield the expected 5. Heating of 1g, 1h, 1j, and 1k with formamide affords the 2-aminothiazolo[4,5-d]pyrimidines 7a and 7b under substitution of the alkylthio by the amino group. 2a and 2b yield with phosphoryl chloride 4a and 4b.
    Type of Medium: Electronic Resource
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