Ultrasound assisted Bradsher reaction in aqueous and non-aqueous media: First use of ultrasounds in electrophilic aromatic cyclisation leading to polyacenes
作者: Emilia KowalskaPiotr Bałczewski
作者单位: 1Group of Synthesis of Functional Materials, Department of Heteroorganic Chemistry, Centre of Molecular and Macromolecular Studies, Polish Academy of Sciences, Sienkiewicza 112, 90-363 Łódź, Poland
2Department of Structural and Material Research, Institute of Chemistry, Environmental Protection and Biotechnology, The Faculty of Mathematics and Natural Sciences, Jan Długosz University in Częstochowa, Armii Krajowej 13/15, 42-201 Częstochowa, Poland
刊名: Ultrasonics - Sonochemistry, 2017, Vol.34 , pp.743-753
来源数据库: Elsevier Journal
DOI: 10.1016/j.ultsonch.2016.07.010
关键词: Bradsher reactionFriedel-Crafts reactionElectrophilic aromatic substitutionCyclisationUltrasoundsPolyacenes
英文摘要: Abstract(#br)The present work describes the first use of ultrasounds in the Bradsher cyclisation of activated and non-activated ortho -formyl diarylmethanes. This reaction is also the first example of electrophilic, aromatic cyclisation assisted by ultrasounds which leads to pure polycyclic, fused aromatic hydrocarbons containing 3 and 4 fused rings in excellent yields. The reaction proceeds not only in aqueous but also in non-aqueous media at milder conditions (room temperature) and in much shorter reaction times than in conventional protocols.
全文获取路径: Elsevier  (合作)
影响因子:3.516 (2012)