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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 34 (1969), S. 2339-2345 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    The @journal of organic chemistry 35 (1970), S. 3007-3012 
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 101 (1968), S. 3957-3962 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: N-Phthaloyl- und N-Succinyl-α-amino-percarbonsäure-tert.-butylester wurden dargestellt. Ihre Thermolyse erfolgt durch homolytische Fragmentierung. Der Einfluß der Phthalimidobzw. Succinimidogruppe auf die Zerfallsgeschwindigkeit wird diskutiert.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 108 (1975), S. 3210-3223 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Organic Peroxides, XXII. Synthesis and Thermolysis of 2-tert-Alkylperoxy-1,3-dioxolan-4-onesIn the reaction of α-acyloxyacid chlorides 1 with tert-butylhydroperoxide normal α-(acyloxy)-peroxycarboxylates 2 and/or 2-tert-butylperoxy-1,3-dioxolan-4-ones 3 are formed, strongly dependent on the structure of the acid chloride and on the reaction conditions. The formation of 3 by neighbouring group participation is favoured by large groups R1 and R2, small groups R3 and by the addition of a bulky organic base or by working without addition of base. β-Acetoxypivaloyl chloride is much less reactive than 1 and only normal β-(acetoxy)peroxypivalate is formed. α-Acetoxyisobutyryl chloride (1a) and α-acetoxypropionyl chloride (1r) react with SbCl5 in CH2Cl2 to give the crystalline 4-oxo-1,3-dioxolane-2-ylium hexachloroantimonates 9 and 10. β-Acetoxypivaloyl chloride forms under similar conditions 2,5,5-trimethyl-4-oxo-1,3-dioxane-2-ylium hexachloroantimonate (11). The compounds 3 are distinguished by an extreme thermal stability (3h t1/2 = 21.5 min at 180°C) and are useful high temperature initiators, particularly for cross linking reactions.
    Notes: In der Reaktion von α-Acyloxycarbonsäurechloriden 1 mit tert-Butylhydroperoxid entstehen, in Abhängigkeit von der Struktur und den Reaktionsbedingungen, die normalen α-(Acyloxy)peroxycarbonsäure- tert-butylester 2 und/oder durch Nachbargruppenbeteiligung 2-tert-Butylperoxy-1,3-dioxolan-4-one 3. Große Reste R1 und R2 und kleine Reste R3 fördern die Bildung von 3 ebenso wie die Verwendung sterisch anspruchsvoller organischer Basen oder die Umsetzung ohne Basenzusatz. β-Acetoxypivaloylchlorid ist wesentlich weniger reaktiv und bildet normalen β-(Acetoxy)peroxypivalinsäure-tert-butylester. Aus α-Acetoxyisobutyrylchlorid (1a) und O-Acetylmilchsäurechlorid (1r) entstehen mit SbCl5 in CH2Cl2 die kristallinen 4-Oxo-1,3-dioxolan-2-yliumhexachloroantimonate 9 und 10. β-Acetoxypivaloylchlorid bildet unter ähnlichen Bedingungen 2,5,5-Trimethyl-4-oxo-1,3-dioxan-2-ylium-hexachloroantimonat (11). Die Peroxide 3 gehören zu den stabilsten organischen Peroxiden (3h t1/2 =21.5 min bei 180°C). Sie eignen sich als Hochtemperaturinitiatoren, besonders für Vernetzungsreaktionen.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1979 (1979), S. 1130-1136 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Synthesis of Mesoionic 2,1,3-Benzothiadiazine 2,2-DioxidesMesoionic 2,1,3-benzothiadiazine 2,2-dioxides 5 are spontaneously formed by reaction of 2-aminobenzaldehyde dimethyl acetal (2) with N-alkylamidosulfonylchlorides with loss of methanol. Structure investigations by spectroscopic methods - especially X-ray photoelectron spectroscopy - reveal a positive charge localised at the N3 atom. - By contrast 2 and isocyanates react via stable ureas 8 to give quaternary quinazolinones 9, wich could not be deprotonated to their mesoionic analogs 7.
    Notes: Die mesoionischen 2,1,3-Benzothiadiazin-2,2-dioxide 5 warden spontan aus 2-Aminobenzalde-hyd-dimethylacetal (2) und N-Alkylamidosulfonylchloriden unter CH3OH-Abspaltung erhalten. Strukturuntersuchungen mit Hilfe spektroskopischer Methoden - insbesondere der Röntgenphotoelektronenspektroskopie - zeigen eine Lokalisierung der positiven Ladung am N3-Atom. - Dagegen bilden 2 und Isocyanate über die Stufe der stabilen Harnstoffe 8 quartäre Chinazolinone 9, bei denen eine Deprotonierung zu ihren mesoionischen Analogen 7 nicht möglich ist.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1985 (1985), S. 2363-2370 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Substituted 1,2,4,6-Thiatriazine 1,1-Dioxides, their Synthesis and StructureN2-(Methoxycarbonyl)amidines 4 and analogously substituted O-(alkyl)isoureas 5 yield, on reaction with N-alkylsulfamic chlorides, sulfamides 6 and 7 which can be cyclized to give 1,2,4,6-thiatriazin-3-one 1,1-dioxides 8 or 9, respectively. Their structural assignment  -  with regard to the position of the acidic hydrogen  -  is supported by X-ray analysis of 9a. The compounds 8 and 9 show herbicidal activity.
    Notes: N2-(Methoxycarbonyl)amidine 4 und analog substituierte O-(Alkyl)isoharnstoffe 5 führen bei der Umsetzung mit N-Alkylsulfamidsäurechloriden zu Sulfamiden 6 und 7, die sich zu 1,2,4,6-Thiatriazin-3-on-1,1-dioxiden 8 bzw. 9 cyclisieren lassen. Ihre Strukturzuordnung hinsichtlich der Position des aciden Wasserstoffs wird durch Röntgenstrukturanalyse von 9a abgesichert. 8 und 9 wirken herbizid.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1988 (1988), S. 317-319 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Substituted 3-Chloro-2H-1,2,4,6-thiatriazine 1,1-Dioxides, Their Synthesis and Reactions, II1)2H-1,2,4,6-Thiatriazin-3(4H)-one 1,1 -dioxides 4 and 5 react with phosphorus pentachloride to yield novel 3-chloro-2H-1,2,4,6-thia-triazine 1,1-dioxides 6 and 7, which are interesting building blocks for subsequent nucleophilic reactions. The reactivity of the halogen atom is illustrated by the reaction of 7 a with propargyl alcohol to 8, by the rearrangement of intermediate thiophosphoric esters to 9 and by an Arbusov-type reaction of 7 a with trimethyl phosphite to 10. The compounds 6, 7, and 8 are herbicidally active.
    Notes: 2H-1,2,4,6-Thiatriazin-3(4H)-on-1,1-dioxide 4 und 5 führen bei der Umsetzung mit Phosphorpentachlorid zu neuartigen 3-Chlor-2H-1,2,4,6-thiatriazin-1,1-dioxiden 6 und 7, interessanten Synthesebausteinen für nucleophile Folgereaktionen. Die Reaktivität des Halogenatoms wird beispielsweise durch Umsetzung von 7 a mit Propargylalkohol zu 8, die Umlagerung intermediär anfallender Thiophosphorsäureester zu 9 sowie eine Arbusov-analoge Reaktion von 7a mit Trimethylphosphit zu 10 belegt. 6, 7 und 8 wirken herbizid.
    Additional Material: 5 Tab.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 93 (1981), S. 916-917 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für die chemische Industrie 93 (1981), S. 151-163 
    ISSN: 0044-8249
    Keywords: Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Die difunktionellen Alkylsulfamidsäurechloride sind variable Bausteine für die Synthese von Heterocyclen, polaren Sulfamidsäureestern und Sulfonamiden. In den letzten Jahren wurden präparativ allgemein anwendbare Methoden entwickelt, nach denen neue, verschiedenartig substituierte Alkylsulfamidsäurechloride durch Umsetzung von Aminhydrochloriden, Isocyanaten, Aziridinen oder tertiären Alkoholen mit Schwefelsäure-Derivaten synthetisiert werden können. In Folgereaktionen lassen sich diese Zwischenprodukte einerseits zu früher unzugänglichen N-Alkoxyalkyl-N-alkylsulfamidsäurechloriden oder neuen Heterocyclen vom Typ der 1H-2,1,3-Benzothiadiazin-4-on-2,2-dioxide, 2H-1,2,6-Thiadiazin-3-on-1,1-dioxide oder 2H-1,2,4,6-Thiatriazin-5-on-1,1-dioxide umwandeln; diese sind Beispiele interessanter Struktur-Wirkungs-Modelle und führen zum Teil zu sehr selektiven, umweltfreundlichen Herbiziden. Andererseits sind durch N-Acylierung der Alkylsulfamidsäurechloride weitere drei- bis fünfatomige difunktionelle Synthesebausteine zugänglich, die sich für neuartige Heterocyclensynthesen eignen. Weitere Anwendungsmöglichkeiten sind die Herstellung biologisch aktiver Sulfamidsäureester sowie Cycloadditionen in situ erzeugter N-Sulfonylamine (Sulfene).
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 0570-0833
    Keywords: Alkylsulfamoyl chlorides ; Sulfamoyl chlorides ; Pesticides ; Crop protection ; Chemistry ; General Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Due to their bifunctional character, alkylsulfamoyl chlorides are versatile units for the synthesis of heterocycles, polar sulfamates, and sulfonamides. In the last decade, synthetic methods of general preparative use have been developed, by means of which amine hydrochlorides, isocyanates, aziridines or tertiary alcohols can be reacted with suitable sulfuric acid derivatives to give novel, variously substituted alkylsulfamoyl chlorides. These compounds can subsequently be converted either to previously unobtainable N-alkoxyalkyl-N-alkylsulfamoyl chlorides or to novel heterocycles of the type 1H-2,1,3-benzothiadiazin-4-one-2,2-dioxide, 2H-1,2,6-thiadia-zin-3-one-1,1-dioxide and 2H-1,2,4,6-thiatriazin-5-one-1,1-dioxide; these compounds are examples of interesting models which illustrate the relation between the structure and the action of the compound, and in some cases lead to highly selective, ecologically unobjectionable herbicides. On the other hand, the alkylsulfamoyl chlorides themselves can be N-acylated to give further 3- to 5-atom bifunctional synthesis units, with which novel heterocyclic syntheses can be carried out. Further uses of the alkylsulfamoyl chlorides include the preparation of biologically active sulfamates, and cycloaddition reactions of N-sulfonylamines prepared in situ.
    Additional Material: 16 Tab.
    Type of Medium: Electronic Resource
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