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Pd‐Colloids‐Catalyzed/Ag 2 O‐Oxidized General and Selective Esterification of Benzylic Alcohols
Author(s) -
Sable Vaibhav,
Shah Jagrut,
Sharma Anuja,
Kapdi Anant R.
Publication year - 2019
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201900566
Subject(s) - catalysis , chemistry , benzyl alcohol , reactivity (psychology) , alcohol , alcohol oxidation , propargyl alcohol , solvent , palladium , oxidative coupling of methane , oxidative phosphorylation , oxide , x ray photoelectron spectroscopy , colloid , organic chemistry , alkyne , polymer chemistry , chemical engineering , medicine , biochemistry , alternative medicine , pathology , engineering
Palladium colloids obtained from the degradation of Hermann–Beller palladacycle proved to be an efficient catalytic system in combination with silver oxide as a selective oxidant for the oxidative esterification of differently substituted benzyl alcohols in MeOH as solvent. Excellent reactivity exhibited by the catalytic system also allowed the alcoholic coupling partner to be changed from MeOH to a wide range of alcohols having diverse functionalities. The mildness of the developed protocol also made it possible to employ propargyl alcohol as the coupling partner without any observation of any interference of the terminal alkyne. Selective oxidative coupling of a primary alcoholic functional group over secondary in the case of glycols and glycerols was also made possible using the developed catalyst system. To test the relevancy of Pd/Ag combined catalysis mixed Pd/Ag colloids were synthesized, characterized by TEM, XRD and XPS and applied to oxidative‐esterification successfully.