-
Pyrones or
pyranones are a
class of
heterocyclic chemical compounds. They
contain an
unsaturated six-membered
lactone ring,
which has one
oxygen atom...
- is a
method for the
alkylation of
certain pyrones with acid chlorides.[citation needed] The
parent 2-
pyrone can be
produced from
decarboxylation of coumalic...
- ; Alessi, J. T.; Chie Chang, S.; C. Joines, R. (1971). "Reactions of 4-
pyrones with
primary amines. A new
class of
ionic ****ociates".
Journal of Heterocyclic...
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strong acids to a
pyrylium cation.
Enolizing conditions (strong acid)
force pyrones to
their pyrylium tautomer.
Pyrylium and its
derivatives form
stable salts...
-
organic compound with the
formula HOCH2C5H2O2OH. It is a
derivative of 4-
pyrone that
functions in
nature as a
chelation agent produced by
several species...
- to the
class of
organic compounds known as benzo-coumarins or dibenzo-α-
pyrones. Its
precursors –
ellagic acids and
ellagitannins – are
ubiquitous in nature...
- sterols, tea polyphenols,
phenolic lipids, dibenzo-alpha-
pyrones (DBP), and dibenzo-α-
pyrone chromoproteins (DCPs).
Shilajit is
composed of 60–80% humic...
-
yields oxalic acid. With pot****ium
bisulfate mucic acid
forms 3-hydroxy-2-
pyrone by
dehydration and decarboxylation.
Mucic acid can be used to
replace tartaric...
-
branched diols as
polymer precursors from biom****-derived
lactones and 2-
pyrones".
Materials Science for
Energy Technologies. 5: 1–5. Bibcode:2022MSET....
-
fireflies are
distasteful to
vertebrate predators, as they
contain the
steroid pyrones lucibu****ins,
similar to the
cardiotonic bufadienolides found in some poisonous...
