Study on the aromatic transesterification reaction catalyzed by phosphotungstic acid
A practical phosphotungstic acid-catalyzed aromatic transesterification reaction for the preparation of aryl benzoates has been developed. The transesterification method avoids the oxidation of the corresponding phenols to quinone compounds with easy operations, environmentally benign conditions and high yields of the products. It is noteworthy that in this process phosphotungstic acid can be reused and recycled.
He, Hong-Qiang,Chang, Yu-Wei,Xu, Wei-Ming
supporting information
p. 280 - 282
(2015/06/22)
Pd(II)-catalyzed C-H activation/aryl-aryl coupling of phenol esters
(Chemical Equation Presented) Although nitrogen-containing group-directed cyclopalladation reactions have been well-known, Pd(II) insertion into C-H bonds promoted by coordination of an oxygen-only group to the palladium remains rather rare. In the present study, the first cyclopalladation complex formed from a simple phenol ester was characterized by X-ray crystallography. A promising protocol for the ortho C-H activation/aryl-aryl coupling of phenol esters that was not sensitive to moisture or air was then established. The utility of the reaction was demonstrated for the synthesis of useful phenol derivatives. Copyright
Xiao, Bin,Fu, Yao,Xu, Jun,Gong, Tian-Jun,Dai, Jian-Jun,Yi, Jun,Liu, Lei
supporting information; experimental part
p. 468 - 469
(2010/03/25)
A convenient procedure for the esterification of benzoic acids with phenols: a new application for the Mitsunobu reaction
The Mitsunobu reaction was found to be a convenient and effective method for the esterification of various benzoic acids with differentially functionalized phenols producing the corresponding phenyl esters in good to excellent yields.
Fitzjarrald, Victor P.,Pongdee, Rongson
p. 3553 - 3557
(2008/02/06)
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