In organic chemistry, one of the most important materials are heterocycle compounds. Among different heterocyclic compounds, the N-containing heterocyclic materials are very important owing to their numerous properties, which can be applied in different fields. In this work, we synthesized pyrido[2,3-d:5,6-d′] dipyrimidine derivatives over an efficient and green method. For this aim, we used vitamin […]
A simple, highly efficient and green procedure for the condensation of o-phenylenediamines with 1, 2-dicarbonyl compounds in the presence of vitamin C, as an inexpensive organocatalyst, is described. Using this method, variety of quinoxaline derivatives with different electron releasing and electron withdrawing substituents, are produced in high to excellent yields at room temperature in ethanol. […]
