Zinc Triflate Promoted General Synthetic Protocol for the Facile Construction of Chromenes and Pyrimidines Bearing N-Allyl Quinolone Nucleus
2015 ◽
Vol 47
◽
pp. 199-207
A series of 8 derivatives of chromene 5a-h synthesized via one-pot cyclocondensation reaction of N-allyl quinolones, α/β naphthol and malononitrile. And 8 derivatives of pyrimidines 8a-h bearing N-allyl quinolone have been synthesized by N-allyl quinolones, ethylacetoacetate, thiourea/urea in the presence of zinc triflate as less toxic catalyst. This methodology allowed the high conversion of product at room temperature. Titled derivatives were elucidated by FT-IR, 1H NMR, 13C NMR, elemental analysis, and mass spectral data.
Synthesis of new derivatives of 1-(3-amino-phenyl)-4- benzoyl-5-phenyl-1h-pyrazole-3-carboxylic acid
2010 ◽
Vol 75
(12)
◽
pp. 1625-1635
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