Acetylation and Formylation of 3-Ferrocenylpyrroles

Autor: Štefan Toma, Battsengel Gotov, Eva Solčániová
Rok vydání: 1999
Předmět:
Zdroj: Collection of Czechoslovak Chemical Communications. 64:99-106
ISSN: 1212-6950
0010-0765
DOI: 10.1135/cccc19990099
Popis: Acetylations of 3-ferrocenyl-1-methylpyrrole as well as 3-cyano-4-ferrocenylpyrrole and 3-cyano-4-ferrocenyl-1-methylpyrrole were performed. The course of the acylation is highly dependent on the acylation agent, that is acetyl chloride/aluminum chloride (method A), trifluoroacetic anhydride-acetic acid mixture (method B) or acetic anhydride/Sc(OTf)3 (method C). Method A gives the acetylation on ferrocene moiety, method B affords the trifluoroacetylation on pyrrole moiety and method C affords pyrrole moiety acetylation. Vielsmeier-Haack formylation gives the products of substitution on pyrrole moiety.
Databáze: OpenAIRE