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  • 1
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Liebigs Annalen 1980 (1980), S. 2012-2020 
    ISSN: 0170-2041
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: tert-Butylation of Biphenyl; Determination of the Structure of Reaction Products by Means of Independent SynthesesThe Friedel-Crafts alkylation of biphenyl with tert-butyl chloride in carbon disulfide using aluminium trichloride as catalyst leads to the formation of only 9 of the 209 theoretically possible tert-butylbiphenyls, namely 3- and 4-tert-butylbiphenyl, 3,5-, 3,3′-, 3,4′- and 4,4′-di-tert-butyl-biphenyl, 3,3′,5-, and 3,4′,5-tri-tert-butylbiphenyl as well as 3,3′,5,5′-tetra-tert-butylbiphenyl. These have been separated by gas chromatography and identified by means of independently synthesized compounds in combination with GC-MS determinations. Five of these compounds have been prepared for the first time.
    Notes: Die Friedel-Crafts-Alkylierung von Biphenyl mit tert-Butylchlorid in Schwefelkohlenstoff liefert bei Verwendung von AICI3 als Katalysator nur 9 von theoretisch 209 möglichen tert-Butylderivaten, nämlich 3- und 4-tert-Butylbiphenyl, 3,5-, 3,3′-, 3,4′- und 4,4′-Di-tert-butylbiphenyl, 3,3′,5- und 3,4′,5-Tri-tert-butylbiphenyl sowie 3,3′,5,5′-Tetra-tert-butylbiphenyl. Diese wurden gaschromatographisch getrennt und ihre Strukturen durch unabhängige Synthesen in Kombination mit GC-MS-Untersuchungen gesichert. Fünf von ihnen waren noch nicht bekannt.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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