title: Ultrasound-assisted thiocyanation of aromatic and heteroaromatic compounds using ammonium thiocyanate and DDQ.
abstract: Thiocyanation of various aromatic and heteroaromatic compounds has been achieved in the presence of ammonium thiocyanate (NH(4)SCN) and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) in methanol solution under ultrasound irradiation. An ultrasonic probe of 24 kHz frequency has been used for this study. Whereas the use of ultrasound increases the rate of reactions compared with reactions at reflux conditions, the electron-donor ability of aromatic nucleus enhances also the rate of reaction.
authors.affiliation: Department of Chemistry, Faculty of Science, University of Isfahan, 81746-73441 Isfahan, Iran. Electronic address: memarian@sci.ui.ac.ir.
authors.forename: Hamid R
authors.initials: HR
authors.lastname: Memarian
authors.affiliation: Department of Chemistry, Faculty of Science, University of Isfahan, 81746-73441 Isfahan, Iran. Electronic address: imbaltork@sci.ui.ac.ir.
authors.forename: Iraj
authors.initials: I
authors.lastname: Mohammadpoor-Baltork
authors.affiliation: Department of Chemistry, Faculty of Science, University of Isfahan, 81746-73441 Isfahan, Iran.
authors.forename: Kobra
authors.initials: K
authors.lastname: Nikoofar
mesh_terms: D016227:Benzoquinones / Q000737:chemistry; D006841:Hydrocarbons, Aromatic / Q000138:chemical synthesis* / Q000528:radiation effects*; D007202:Indicators and Reagents; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry; D013055:Spectrophotometry, Infrared; D013861:Thiocyanates / Q000138:chemical synthesis* / Q000528:radiation effects*; D014465:Ultrasonics
chemical_list: D016227:Benzoquinones; D006841:Hydrocarbons, Aromatic; D007202:Indicators and Reagents; D013861:Thiocyanates; C000928:dichlorodicyanobenzoquinone; C026976:thiocyanic acid