Articles by Topic "Brønsted acids"

1. Fries rearrangement
   posted this at Jun 9, 2025

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   The Fries rearrangement reaction is the synthesis of o- or para-acyl phenols from phenolic esters catalyzed by Lewis or Brønsted acids (e.g., HF, AlCl3, BF3, TiCl4, or SnCl4).The Fries rearrangement reaction was first reported by the German chemist Karl Theophil Fries, after whom it was named, ...