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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: Fragmentations with Supernucleophiles, VIII.  - Cleavage of β-Halogenated Urethanes by Co-balt(I)-phthalocyanine; a New Amino Protecting Group Technique for Peptide SynthesesHerrn Prof. Dr. Otto Bayer in Verehrung zum 75. Geburtstag gewidmet.A new protecting group technique, using ß-haloalkoxycarbonyl groups is presented and tested in two peptide syntheses. These protection groups are removed selectively and under mild conditions by the supernucleophilic cobalt(I)-phthalocyanine. The mechanism of this reaction consists in an alkylation step, followed by fragmentation.
    Notes: Eine neue Schutzgruppentechnik unter Verwendung von ß-Halogenalkoxycarbonyl-Gruppen wird vorgestellt und ihre Nützlichkeit anhand zweier Peptidsynthesen bewiesen. Die Abspaltung der Schutzgruppen erfolgt selektiv mit supernukleophilem Kobalt(I)-phthalocyanin über einen Alkylierungs-, Fragmentierungsmechanismus unter sehr schonenden Bedingungen.
    Additional Material: 9 Tab.
    Type of Medium: Electronic Resource
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