title: Dimethyl sulfide induced [3+2] annulation strategy: an efficient synthesis of functionalized dihydropyrazole derivatives using the Baylis-Hillman bromides.
abstract: Baylis-Hillman bromides have been successfully employed as a valuable source of 1,3-dipoles for cycloaddition onto dialkyl azodicarboxylates (dipolarophiles) under the influence of dimethyl sulfide and potassium carbonate to provide functionalized dihydropyrazole derivatives in a simple one-pot [3+2] annulation strategy.
authors.affiliation: School of Chemistry, University of Hyderabad, Hyderabad, India. dbsc@uohyd.ernet.in
authors.forename: Deevi
authors.initials: D
authors.lastname: Basavaiah
authors.forename: Suparna
authors.initials: S
authors.lastname: Roy
mesh_terms: D001965:Bromides / Q000737:chemistry; D015394:Molecular Structure; D011720:Pyrazoles / Q000138:chemical synthesis* / Q000737:chemistry; D013440:Sulfides / Q000737:chemistry
chemical_list: D001965:Bromides; D011720:Pyrazoles; D013440:Sulfides; C004784:dimethyl sulfide