Amine-functionalized hyper-crosslinked polyphenanthrene as a metal-free catalyst for the synthesis of 2-amino-tetrahydro-4 H -chromene and pyran derivatives
作者:Reddi Mohan Naidu Kalla、Anuraj Varyambath、Mi Ri Kim、Il Kim
DOI:10.1016/j.apcata.2017.03.009
日期:2017.5
the polymerization of phenanthrene using bromomethyl methyl ether as a bridging agent in the absence of any templates. The organic spheres were subjected to amine-functionalizing on the periphery of them using unreacted bromomethyl groups. The amine-functionalized microporous polyphenthrene could be employed as a highly effective and stable solid basic catalyst for the syntheses of functionalized 2-
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