Choice of Solvent in the Synthesis of Chromeno[3,4-<i>c</i>]pyridines and Chromene-3-carboxylates
作者:Mansing M. Mane、Suyog N. Korade、Sarika M. Chinchkar、Dattaprasad M. Pore
DOI:10.1080/00304948.2018.1468989
日期:2018.7.4
variety of condensation procedures have been used for the synthesis of chromenopyridine derivatives. Marta Costa reported a two component method for synthesis of 4amino-2-hydroxy-5-methylidene-5H-chromeno [3,4-c]pyridine-1-carbonitriles (4) from 2-oxo-2H-1-benzopyran-3-carbonitrile and cyanoacetamide in the presence of triethylamine, which were active at adenosine receptors. O’Callaghan and co-workers carried