The reaction of triiodoisocyanuric acid (TICA) with deactivated arenes in acidic medium led to the efficient and regioselective formation of the corresponding iodoarenes, in 55-88% isolated yield. The acidity of the medium was found to be the most important factor influencing the electrophilic iodination of weakly nucleophilic substrates by TICA.
H e x a m e t h y l e n e t e t r a m i n e -M e d i a t e d T r a n s e s t e r i f i c a t i o n o f b -K e t o E s t e r s Abstract: Treatment of methyl or ethyl b-keto esters with primary, secondary, or tertiary alcohols in the presence of a catalytic amount of hexamethylenetetramine results in good to high yields of the corresponding esters.
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