Abstract
A series of triphenylamine-mdified arylates and ketones were synthesized via Pd-catalyzed Suzuki coupling reaction of triphenylamine boronic acid with aryl bromide. The triphenylamine boronic acid was synthesized by iodization of 4-bromoaniline, Ullmann reaction of 1-bromo-4-iodobenzene with diphenylamine, and boronic acidification of 4-bromotriphenylamine.
ACKNOWLEDGMENTS
This work was financially supported by NSFC 60868001.
Notes
a The reactions were carried out utilizing 3% (mol) of Pd catalyst, 1.0 equiv. of 5, 1.5 equiv. of 6, and 3 equiv. of base under N2.
b Isolated yield.
c The ratio in volume for toluene, ethanol, and H2O was 5:3:1.
d The ratio in volume for ethanol and H2O was 3:1.
e 4 equiv. of base was used.