Abstract:
In this manuscript, we explained the purpose of our study, and the results obtained. We are interested in developing new protocols that fall within the field of green chemistry (sustainable chemistry) , offering two new Brϕnsted acids of natural origin catalysts ( ascorbic acid and acetylsalicylic acid); the reactions on which we did our study are multi-component reactions : reaction Biginelli , Hantzsch and synthesis of benzopyran which are divided into
three chapters.
The three reactions are carried out in a dry environment , which was a plus for our research, we could obtain very good results , that am for returns or for necessary for the progress of the reactions , we have also enriched the library of molecules, the production of new molecules with very good yields in record time.
