Methanesulfonic acid/phosphorus oxychloride (MAPO) as a new efficient reagent in the Fries rearrangement
作者:Babak Kaboudin
DOI:10.1016/s0040-4020(99)00759-0
日期:1999.10
Methanesulfonicacid/phosphorus oxychloride (MAPO) was found to be a new effecient reagent in the Fries rearrangement of phenolic esters. Fries rearrangement of phenolic esters in the presence of MAPO, gave acylaryl methane sulfonates as major products.
CH 3 SO 3 H/P 2 O 5 (4:1) As An Efficient Reagent for the One-Pot Synthesis of Acylaryl Methane Sulfonates of Phenolic
作者:B. Kaboudin
DOI:10.1080/10426500307808
日期:2003.4
Methansulfonic acid/di-phosphorus pentoxide (4:1) was found to be an efficient reagent for one-pot synthesis of acylaryl methane sulfonates of phenolic esters via Friesrearrangement. This method is easy, rapid, and high-yielding reactions for the synthesis of acylaryl methane sulfonates.
Sharghi, Hashem; Kaboudin, Babak, Journal of Chemical Research, Miniprint, 1998, # 10, p. 2678 - 2695
作者:Sharghi, Hashem、Kaboudin, Babak
DOI:——
日期:——
The Mechanism of Fries Rearrangement and Acylation Reaction in Polyphosphoric Acid.
作者:Hashem Sharghi、Hossien Eshghi
DOI:10.1246/bcsj.66.135
日期:——
Acylation reaction of m-cresol with 2-chlorobenzoic acid in PPA occurred through a prior esterification, followed by a Fries rearrangement of ester (3) to give benzophenones 4—7.Ester 3 undergoes the Fries rearrangement in PPA, giving benzophenones 4—7 in about the same yield as can be obtained by direct acylation reaction of m-cresol with 2-chlorobenzoic acid. The benzophenone 5 is not stable in PPA and decomposed to benzophenone (4). The formation of benzophenones 4—7, from Fries rearrangement of the ester 3 was interpreted by an intermolecular mechanism.