Convenient ultrasound-mediated synthesis of 1,4-diazabutadienes under solvent-free conditions.
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%).
He
Jing-Yu
JY
College of Life Science and Bio-engineering, Beijing University of Technology, Pingleyuan Street No. 100, Chaoyang District, Beijing 100124, PR China.
Xin
Hong-Xing
HX
Yan
Hong
H
Song
Xiu-Qing
XQ
Zhong
Ru-Gang
RG
D000588:Amines / Q000737:chemistry; D007097:Imines / Q000138:chemical synthesis* / Q000737:chemistry; D007659:Ketones / Q000737:chemistry; D011700:Putrescine / Q000138:chemical synthesis* / Q000737:chemistry; D014465:Ultrasonics
D000588:Amines; D007097:Imines; D007659:Ketones; D011700:Putrescine