286474-51-9Relevant academic research and scientific papers
Phase transfer catalysis for tandem alkylation of azo dyes for the synthesis of novel multifunctional molecules
Li, Xiang,Mintz, Eric A,Bu, Xiu R,Zehnder, Oliver,Bosshard, Christian,Günter, Peter
, p. 5785 - 5791 (2000)
Potentially photorefractive molecules, which possess both a charge transfer component and a nonlinear optical chromophore, were prepared by the direct N-monoalkylation of Disperse Orange 3 (1) with a carbazole alkyl bromide (2) utilizing phase transfer catalysis. Further N-alkylation of the remaining active N-H with alkyl halides with various chain lengths allowed the thermal properties of the Disperse Orange 3 derivatives to be fine-tuned. (C) 2000 Elsevier Science Ltd.
Combined phase transfer catalysis and ultrasound to enhance tandem alkylation of azo dyes
Li, Xiang,Wang, Jie,Mason, Richard,Bu, Xiu R,Harrison, Joycelyn
, p. 3747 - 3753 (2007/10/03)
Ultrasound has been found to enhance N-substitution against elimination in the reaction of carbazole-containing bromides 3 with a Disperse Orange 3 derivative 2 under PTC condition. Upon using combined PTC and ultrasound conditions, a series of bifunctional molecules 1 have been prepared to possess charge-transporting agents and nonlinear optical chromophores in 2:1 ratio.
