An improved synthesis of hydroxy aryl ketones by fries rearrangement with methanesulfonic acid/methanesulfonic anhydride
Methanesulfonic acid treated with methanesulfonic anhydride effectively mediates the Fries rearrangement of aryl esters to give hydroxy aryl ketones with high yields. Georg Thieme Verlag Stuttgart · New York.
Jeon, Ingyu,Mangion, Ian K.
experimental part
p. 1927 - 1930
(2012/10/08)
A convenient one-pot completely stereoselective synthesis of trans-4-Hydroxystilbenes and its derivatives and X-ray structure of its precursor
The synthesis of E-isomer of 4-Hydroxystilbene and its derivatives 3 by reductive elimination of the carbonyl function in 2-phenyl-1-(4-hydroxyphenyl)ethan-1-one and its derivatives 2 and the X-ray structure of 2a are described.
Chhor, Rakeshwar B.,Singh, Kunwar A.,Nosse,Tandon, Vishnu K.
p. 2519 - 2530
(2007/10/03)
Alumina in Methanesulfonic Acid (AMA) as a New Efficient Reagent for Direct Acylation of Phenol Derivatives and Fries Rearrangement. A Convenient Synthesis of o-Hydroxyarylketones
Alumina in methanesulfonic acid (AMA) is used to prepare o-hydroxyaryl ketones by acylation of phenol and naphthol derivatives with carboxylic acids and the Fries rearrangement of phenolic esters. Mechanistic studies show that the acylation reaction in AMA occurred through an esterification followed by a Fries rearrangement of the phenolic ester by an intermolecular mechanism.
Sharghi, Hashem,Kaboudin, Babak
p. 2678 - 2695
(2007/10/03)
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