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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Berichte der deutschen chemischen Gesellschaft 106 (1973), S. 3368-3375 
    ISSN: 0009-2940
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: 1,2,4-Benzothia(IV)diazines and 1,2,5-Benzothia(IV)diazepines, 2. Preparation and Ring Enlargement of some 3-(Chloromethyl)-3,4-dihydro-1,2,4-benzothia(IV)-diazine 1-OxidesSulfoximides 2 react with aldehydes or ketones to give 3,4-dihydro-1,2,4-benzothia(IV)diazines 3. With aldehydes the reaction is shown to afford stereoselectively only one of the two diastereoisomeres. Treatment of 3a, g, and h with alcoholate proceeds under ring enlargement to the novel 4,5-dihydro-3H-1,2,5-benzothia(IV)diazepines 5 and 6, respectively. 3i undergoes an intramolecular rearrangement to 7.
    Notes: Sulfoximide vom Typ 2 reagieren mit Aldehyden oder Ketonen zu 3,4-Dihydro-1,2,4-benzothia(IV)diazinen 3. Mit Aldehyden verläuft die Reaktion stereoselektiv unter Bildung nur eines der beiden möglichen Diastereomeren. Unter der Einwirkung von Alkoholat erfahren 3a, g und h eine Ringerweiterung zu 4,5-Dihydro-3H-1,2,5-benzothia(IV)diazepinen 5 bzw. 6. 3i unterliegt einer intramolekularen Umwandlung zu 7.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
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