- A
sigmatropic reaction in
organic chemistry is a
pericyclic reaction wherein the net
result is one σ-bond is
changed to
another σ-bond in an uncatalyzed...
-
selection rules for an [i,j]-
sigmatropic rearrangement are as follows: For supra/supra or antara/antara [i,j]-
sigmatropic shifts, if i + j = 4n + 2 they...
- ylide. Many
ylides react in
sigmatropic reactions. The Sommelet-Hauser
rearrangement is an
example of a [2,3]-
sigmatropic reaction. The
Stevens rearrangement...
- 2,3-
Sigmatropic rearrangements are a type of
sigmatropic rearrangements and can be
classified into two types.
Rearrangements of
allylic sulfoxides, amine...
-
chorismate to
prephenate in
almost all
prototrophic organisms [1,5]-
sigmatropic shift in the
transformation of precorrin-8x to
hydrogenobyrinic acid...
-
uncracked dimer. The
hydrogen atoms in
cyclopentadiene undergo rapid [1,5]-
sigmatropic shifts. The
hydride shift is
however sufficiently slow at 0 °C to allow...
-
Ludwig Claisen. The
heating of an
allyl vinyl ether will
initiate a [3,3]-
sigmatropic rearrangement to give a γ,δ-unsaturated carbonyl,
driven by exergonically...
-
rearrangement is an
extensively studied organic reaction involving the [3,3]-
sigmatropic rearrangement of 1,5-dienes. It was
developed by
Arthur C. Cope and Elizabeth...
- N-substituted
pyrrole derivative,
which was
heated to
convert it by a [1,5]
sigmatropic shift to the
isomer with a
carbon bond
between the
pyrrole and pyridine...
-
lobes of the bond. The
components of all
pericyclic reactions,
including sigmatropic reactions and cycloadditions, and electrocyclizations, can be classified...
