Last Updated：2025/12/30
Sentence
The
annellation
of
the
pyrimidine
ring
onto
alicyclic
alkenes
has
been
achieved
using
Diels-Alder
chemistry.
2,4-Dimethoxy-1,3-diazaanthracene
(DDA)
reacts
with
Smith’s
diene
under
forcing
thermal
conditions
(sealed
tube
at
180
°C)
to
form
a
mixture
of
stereoisomeric
adducts
which
can
be
separated
by
fractional
crystallization.
Quizzes for review
The annellation of the pyrimidine ring onto alicyclic alkenes has been achieved using Diels-Alder chemistry. 2,4-Dimethoxy-1,3-diazaanthracene (DDA) reacts with Smith’s diene under forcing thermal conditions (sealed tube at 180 °C) to form a mixture of stereoisomeric adducts which can be separated by fractional crystallization.
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