title: An expedient route to dihydrothiazines, a virtually unknown class of heterocycles.
abstract: Upon heating at 180-200 °C in diphenyl ether, S-(4-oximinoalkyl)xanthates with a secondary isopropyl or isobutyl group on the oxygen undergo a Chugaev elimination followed by ring closure onto the oxime to give dihydrothiazines, a virtually unknown class of heterocycles.
authors.affiliation: Laboratoire de Synthèse Organique, CNRS UMR 7652 Ecole Polytechnique , 91128 Palaiseau Cedex, France.
authors.forename: Béatrice
authors.initials: B
authors.lastname: Quiclet-Sire
authors.forename: Samir Z
authors.initials: SZ
authors.lastname: Zard
mesh_terms: D006571:Heterocyclic Compounds / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D010091:Oximes / Q000737:chemistry*; D010647:Phenyl Ethers / Q000737:chemistry*; D013843:Thiazines / Q000138:chemical synthesis* / Q000737:chemistry; D014970:Xanthines / Q000737:chemistry*
chemical_list: D006571:Heterocyclic Compounds; D010091:Oximes; D010647:Phenyl Ethers; D013843:Thiazines; D014970:Xanthines; C031538:phenyl ether