title: Expedient approach to novel N-unprotected bicyclic azapyrimidine and pyridine structures.
abstract: A direct route to novel bicyclic N-unprotected azapyrimidine structures including fused five-, six-, and seven-membered rings is described involving radical addition and cyclization of xanthates; this approach could be partially extended to pyridines.
authors.affiliation: Laboratoire de Synthèse Organique, CNRS UMR 7652, Ecole Polytechnique, 91128 Palaiseau Cedex, France.
authors.forename: Zhibo
authors.initials: Z
authors.lastname: Liu
authors.forename: Ling
authors.initials: L
authors.lastname: Qin
authors.forename: Samir Z
authors.initials: SZ
authors.lastname: Zard
mesh_terms: D001372:Aza Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D019086:Bridged Bicyclo Compounds, Heterocyclic / Q000138:chemical synthesis* / Q000737:chemistry; D002384:Catalysis; D003500:Cyclization; D015394:Molecular Structure; D011725:Pyridines / Q000737:chemistry; D011743:Pyrimidines / Q000737:chemistry*
chemical_list: D001372:Aza Compounds; D019086:Bridged Bicyclo Compounds, Heterocyclic; D011725:Pyridines; D011743:Pyrimidines