title: Convenient ultrasound-mediated synthesis of 1,4-diazabutadienes under solvent-free conditions.
abstract: An ultrasound-assisted preparation of 1,4-diazabutadienes via smooth condensation of diketones with amines under solvent-free conditions is described. The generality of this method was examined by the synthesized N,N'-diaryl- and N,N'-dialkyl-1,4-diazabutadiene derivatives. In addition to experimental simplicity, the main advantages of the procedure are mild conditions, short reaction time (2-15 min) and high yields (71-98%).
authors.affiliation: College of Life Science and Bio-engineering, Beijing University of Technology, Pingleyuan Street No. 100, Chaoyang District, Beijing 100124, PR China.
authors.forename: Jing-Yu
authors.initials: JY
authors.lastname: He
authors.forename: Hong-Xing
authors.initials: HX
authors.lastname: Xin
authors.forename: Hong
authors.initials: H
authors.lastname: Yan
authors.forename: Xiu-Qing
authors.initials: XQ
authors.lastname: Song
authors.forename: Ru-Gang
authors.initials: RG
authors.lastname: Zhong
mesh_terms: D000588:Amines / Q000737:chemistry; D007097:Imines / Q000138:chemical synthesis* / Q000737:chemistry; D007659:Ketones / Q000737:chemistry; D011700:Putrescine / Q000138:chemical synthesis* / Q000737:chemistry; D014465:Ultrasonics
chemical_list: D000588:Amines; D007097:Imines; D007659:Ketones; D011700:Putrescine