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  • 1985-1989  (1)
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  • 1
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Eine einfache Synthesevorschrift für Insektenwachstumsregulatoren.  -  Cyclopenten-Analoge von (2E,4E)-DodecadiensäureesternAusgehend von den Aldehyden 7 und Methylvinylketon werden die Titelverbindungen 3a-d und deren entsprechende 2Z-Isomeren 16a-d in drei Stufen hergestellt: (1) Thiazoliumsalz-katalysierte Addition zu den Diketonen 8, (2) cyclisierende Aldolreaktion zu den entsprechenden Cyclopentenonen 11, (3) Wittig-Horner-Reaktion. Dadurch ließen sich 5-substituierte 2,4-Pentadienoate aufbauen. Ferner werden die Ergebnisse von Pestizid-Eignungstests mitgeteilt.
    Notes: Starting with the aldehydes 7 and methyl vinyl ketone the title compounds 3a-d and their corresponding 2Z isomers 16a-d are prepared in three steps: (1) thiazolium salt-catalyzed addition reaction to yield the diketone 8, (2) cyclocondensation reaction to give the corresponding cyclopentenone 11, and (3) Wittig-Horner reaction. This procedure is used to synthesize the 5-substituted 2,4-pentadienoates 3f-i. The results from pesticide screening are also reported.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
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