Facile p-toluenesulfonic acid-promoted para-selective monobromination and chlorination of phenol and analogues
…, K Pla-on, S Aphimanchindakul, N Pungcharoenpong…
Index: Bovonsombat, Pakorn; Ali, Rameez; Khan, Chiraphorn; Leykajarakul, Juthamard; Pla-On, Kawin; Aphimanchindakul, Suraj; Pungcharoenpong, Natchapon; Timsuea, Nisit; Arunrat, Anchalee; Punpongjareorn, Napat Tetrahedron, 2010 , vol. 66, # 34 p. 6928 - 6935
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Citation Number: 28
Abstract
para-Regioselective bromination of phenol and analogues, promoted by p-toluenesulfonic acid, is achieved in high to excellent yields at room temperature with N-bromosuccinimide. Chlorination with N-chlorosuccinimide and catalysed by p-toluenesulfonic acid also gives para-chlorinated phenol analogues in good yields at room temperature.
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