Research on Chemical Intermediates p. 9643 - 9653 (2015)
Update date:2022-08-10
Topics:
Tai, Yan Fang
Dong, Xiong Zi
Xu, Hao Shu
Shi, Chun Jie
Peng, Xin Hua
In the presence of molecular oxygen and zeolite La-b with Si/ Al2 = 260, regioselective mononitration of biphenyl with stoichiometric quantities of liquid nitrogen dioxide occurs at 20 °C to yield mononitrobiphenyl, as the main product, in yields up to 82.7 %. The 2-nitrobiphenyl:4-nitrobiphenyl isomer ratio is 0.34. The process is eco-friendly and inexpensive, and the zeolite is easily regenerated by simple work-up to give results similar to those obtained with the fresh catalyst.
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