Chemie der Metacycloprodigiosine |
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| Authors: | Dr. Heinz Berner Gerhard Schulz Hellmuth Reinshagen |
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| Affiliation: | (1) Sandoz Forschungsinstitut, Brunnerstraße 59, A-1230 Wien, Österreich |
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| Abstract: | Alkylation of 3-hydroxypyrromethenes and 3-hydroxypyrrole derivatives with trialkyloxoniumtetrafluoborate afforded 3-alkoxy-derivatives whereas other methods of alkylation (dimethyl sulfate, methyl fluorosulfonate, diazomethane) led only to N-methylated compounds. The structure assignments were based on chemical and spectroscopic data. |
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