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A facile nuclear bromination of phenols and anilines using NBS in the presence of ammonium acetate as a catalyst.
Biswanath Das, a, , Katta Venkateswarlua, Anjoy Majhia, Vidavalur Siddaiaha and Kongara Ravinder Reddya.
Journal of Molecular Catalysis A: Chemical
Volume 267, Issues 1-2, 18 April 2007, Pages 30-33
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http://dx.doi.org/10.1016/j.molcata.2006.11.002