A facile method for the trifluoromethylsulfinylation of activated arenes with trifluoromethanesulfinyl chloride in the presence of Lewis acid was developed. The protocol could be expanded to the perfluoroalkylsulfinylation of activated arenes, as...
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Lanthanum–Catalyzed One–Pot Synthesis of Chromeno–Fused Pyridine/Quinolinone Derivatives
European Journal of Organic Chemistry, März 2024, DOI. Login für Volltextzugriff.
Von Wiley-VCH zur Verfügung gestellt
A facile one–pot method has been developed for the synthesis of chromeno fused pyridine/quinolinone derivatives. The reactions proceeded through the formation C−O, C−N and C−C bonds to form the title compounds. The bio–active compound 6H-chromeno[4,3-b] quinolin-6-one has been prepared by this protocol.
Abstract
A novel one-pot approach has been developed for the preparation of 5-oxo-5H-chromeno[4,3-b] pyridine-3-carboxylates and 6H-chromeno[4,3-b] quinolin-6-ones by reacting 2-((benzylimino/phenylimino)-methyl) phenols with ethyl/methyl propiolate in presence of La(OTf)3 under thermal conditions. The reactions proceeded through the formation C−O, C−N and C−C bonds to form the title compounds. The bio–active compound 6H-chromeno[4,3-b] quinolin-6-one has been prepared by this protocol.
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