title: A diastereoselective synthesis of pyrano fused coumarins via organocatalytic three-component reaction.
abstract: A new method for the synthesis of pyran fused coumarins by 3-bromo-4-hydroxycoumarins as cyclic α-halo ketones based on an organocatalyst assisted three-component tandem reaction is investigated. To the best of our knowledge, cyclic α-halo ketones have not yet been used for the synthesis of pyran fused coumarins.
authors.affiliation: Shahid Beheshti University, Tehran, Islamic Republic of Iran.
authors.forename: Somayeh
authors.initials: S
authors.lastname: Ahadi
authors.forename: Mahdi
authors.initials: M
authors.lastname: Zolghadr
authors.forename: Hamid Reza
authors.initials: HR
authors.lastname: Khavasi
authors.forename: Ayoob
authors.initials: A
authors.lastname: Bazgir
mesh_terms: D002384:Catalysis; D002625:Chemistry, Organic / Q000379:methods*; D003374:Coumarins / Q000138:chemical synthesis* / Q000737:chemistry*; D008956:Models, Chemical; D008968:Molecular Conformation; D011714:Pyrans / Q000138:chemical synthesis* / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: D003374:Coumarins; D011714:Pyrans