Dibutylamine-catalysed efficient one-pot synthesis of biologically potent pyrans
作者:Reddi Mohan Naidu Kalla、Mi Ri Kim、Il Kim
DOI:10.1016/j.tetlet.2014.12.079
日期:2015.1
expedient, eco-friendly and efficient procedure for the preparation of novel pyran derivatives has been developed through a solvent-free, one-pot reaction of various aldehydes, malononitrile and either methylacetoacetate or ethylbenzoylacetate in the presence of dibutylamine (2.5 mol %) at room temperature. This procedure is advantageous because it is mild, environmentally friendly, gives high yields and requires
Synthesis of pyridinium-based salts: Catalytic application at the synthesis of six membered O-heterocycles
作者:Saeed Babaee、Mohammad Ali Zolfigol、Mahmoud Zarei、Maryam Abbasi、Zahra Najafi
DOI:10.1016/j.mcat.2019.110403
日期:2019.10
[PySO3H]FeCl4 as a magnetic molten salts was also investigated. Three categories of six membered O-heterocyclic compounds such as 2-amino-4H-chromene, 2-amino-4,8-dihydropyrano and 2-amino-4H-pyrans were prepared in the presence of a catalytic amount of the above said molten salts. These synthesized O-heterocyclic compounds are highly regarded due to their biological activities.