One-Pot Synthesis of Trifluoromethyl-Substituted Imidazobenz[1,2-d]- and -[1,2-c]isoxazoles

Autor: Alexander V. Baranovsky, V. G. Isakova, Yu. A. Piven, T. S. Khlebnikova, V. A. Smaliak, Fedor A. Lakhvich
Rok vydání: 2020
Předmět:
Zdroj: Russian Journal of General Chemistry. 90:746-749
ISSN: 1608-3350
1070-3632
Popis: Synthesis of regioisomeric 8-trifluoromethyl-4,5-dihydro-3H-imidazo[4',5':5,6]benz[1,2-d]isoxazoles and 8-trifluoromethyl-4,5-dihydro-3H-imidazo[4',5':3,4]benz[1,2-c]isoxazolones was realized by one-pot oxidation of 3-trifluromethyl-6,7-dihydrobenz[d]- or [c]isoxazoles with selenium dioxide in glacial acetic acid followed by a condensation of formed in situ 3-trifluromethyl-6,7-dihydrobenz[d]- or [c]isoxazole-4,5-diones with benzaldehydes in the presence of ammonium acetate.
Databáze: OpenAIRE
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