Medium-dependent regioselectivity of electrochemical bromination of methyl levulinate†
Guanna
Li, 
a
Fedor M.
Miloserdov,
b
Daan S.
van Es,
c
Pieter C. A.
Bruijnincx
d
and
Johannes H.
Bitter
*a
a
Fedor M.
Miloserdov,
b
Daan S.
van Es,
c
Pieter C. A.
Bruijnincx
d
and
Johannes H.
Bitter
*a
Abstract
An electrochemical method for the bromination of renewable methyl levulinate using ammonium bromide is reported. Regioselectivity depended on the solvent used: the formation of 5-bromolevulinate was favored in methanol and 3-bromolevulinate in a MeCN : H2O mixture. To explain the observed change, different bromination mechanisms were proposed.
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