Communication
ChemComm
¨
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The corresponding salicylic acids were successfully derived from
resorcinols in high yields. The site-selectivity of carboxylation was
clearly controlled by the substituents on resorcinol, and the
product was obtained as a single isomer in all cases. The reactive
intermediate and the site-selectivity were elucidated by NMR
experiments, mainly. It was demonstrated that this methodology
could be applicable for a preparative-scale synthesis under atmo-
spheric pressure of carbon dioxide around room temperature.
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A. Cherubini-Celli, J. Mateos, M. Bonchio, L. Dell’Amico and
Conflicts of interest
The authors declare no conflict of interest.
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X. Companyo, ChemSusChem, 2018, 11, 3056.
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19 See ESI† for more detailed discussion.
20 3q is a thermodynamic product. See ESI† for more detailed study on
the selectivity of carboxylation.
21 See ESI.†.
22 The pressure of the CO2 balloon was measured by a pressure gauge,
and it showed that the pressure was below 1.1 atm.
23 Resorcinols bearing electron withdrawing groups were not effi-
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