Facile one-pot green synthesis of tetrahydrobiphenylene-1,3-dicarbonitriles in aqueous media under ultrasound irradiation
作者:Nhlanhla Gracious Shabalala、Suresh Maddila、Sreekantha B. Jonnalagadda
DOI:10.1007/s11164-016-2581-0
日期:2016.12
Abstract An efficient and rapid procedure for the synthesis of 16 novel tetrahydrobiphenylene-1,3-dicarbonitrile derivatives ( 4a–p ) is described, employing the reaction of aromatic aldehydes, malononitrile and 3-methyl-cyclohexanone or 2-methyl-cyclohexanone at room temperature in aqueous NaOH under ultrasonic irradiation, with excellent yields. The other attractive features of this protocol over