Efficient and simple approaches towards direct oxidative esterification of alcohols.
Ritwika Ray, Rahul Dev Jana, Mayukh Bhadra, Debabrata Maiti, Goutam Kumar Lahiri
Index: Chemistry 20(47) , 15618-24, (2014)
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Abstract
The present article describes novel oxidative protocols for direct esterification of alcohols. The protocols involve successful demonstrations of both "cross" and "self" esterification of a wide variety of alcohols. The cross-esterification proceeds under a simple transition-metal-free condition, containing catalytic amounts of TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy)/TBAB (tetra-n-butylammonium bromide) in combination with oxone (potassium peroxo monosulfate) as the oxidant, whereas the self-esterification is achieved through simple induction of Fe(OAc)2 /dipic (dipic=2,6-pyridinedicarboxylic acid) as the active catalyst under an identical oxidizing environment. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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