- 127 30.3
Monosubstituted trans-2-Butene 116 27.6
Disubstituted 2-Methyl-2-butene 113 26.9
Trisubstituted 2,3-Dimethyl-2-butene 111 26.6
Tetrasubstituted...
-
formula Me2C=CMe2 (Me = methyl). A
colorless liquid, it is the
simplest tetrasubstituted alkene. It can be
prepared by base-catalyzed
isomerization of 2,3-dimethyl-1-butene...
-
trisubstituted enolate is
considered the
kinetic enolate,
while the
tetrasubstituted enolate is
considered the
thermodynamic enolate. The
alpha hydrogen...
- the
large energy barriers between different conformations. 2,2',6,6'-
Tetrasubstituted biphenyls can fit into this
latter category.
Anomerism is an identity...
-
unambiguous in all cases, and
therefore are
especially useful for tri- and
tetrasubstituted alkenes to
avoid any
confusion about which groups are
being identified...
- GRF (1-29)
often abbreviated as mod GRF (1-29),
originally known as
tetrasubstituted GRF (1-29), is a term used to
identify a 29
amino acid
peptide analogue...
-
Complexes with Imidazolin-2-ylidene
Ligands Allow the
Formation of
Tetrasubstituted Cycloalkenes by RCM".
Tetrahedron Lett. 40 (26): 4787–4790. doi:10...
-
molecular structure,
alongside 16
stereogenic centres, 7 of
which are
tetrasubstituted.
These characteristics explain the
great difficulty encountered when...
-
prepared by gas-phase
oxidation of 1,2,4,5-tetramethylbenzene (or
related tetrasubstituted benzene derivatives). An
idealized equation is: C6H2(CH3)4 + 6 O2 →...
- inefficient. For this reason,
Wittig reagents are
rarely used to
prepare tetrasubstituted alkenes. The
alkylphosphonium salt is
deprotonated with a
strong base...
