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  • 1
    Electronic Resource
    Electronic Resource
    Side-product inhibition of the catalyst in electrophilic aromatic substitutions and Friedel-Crafts reactions (1993)
    Springer
    Catalysis letters 17 (1993), S. 63-69 
    Details
    ISSN: 1572-879X
    Keywords: Modified clay catalyst ; “clayzic” ; catalyst poisoning ; chelation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Electrophilic substitutions on aromatics such as C6H5X often lead to mixtures of the ortho- and para-disubstituted products C6H4XY. The former can chelate a metallic center and hence be a potential catalyst inactivator, whenever the (X, Y) substituents have atoms with lone pairs. This general principle operates in the Friedel-Crafts acylation of anisole, a reaction of industrial importance.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00763928
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Attraction responses of the American cockroach to synthetic periplanone-B (1981)
    Springer
    Journal of chemical ecology 7 (1981), S. 265-272 
    Details
    ISSN: 1573-1561
    Keywords: Sex pheromones ; cockroach ; Periplaneta americana ; Orthoptera ; Blattidae ; periplanone-B ; margarine oil ; sex ratio ; control
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Abstract Synthetic periplanone-B has been shown not only to be a sex excitant to malePeriplaneta americana by bioassay in the laboratory but also an attractant pheromone by field tests in a rice storage house in Taipei. During both summer and winter months, it attracted signincantly more adult males into the traps used in the experiments than adult females. There is a statistically significant increase in the sex ratio (male-female) of the trapped adults with increase in periplanone-B used. An attempt has been made to explain the trapping of females and nymphs in addition to males by the chemicals used in our tests.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00995749
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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