- soon as (or while) they are produced.
Ketenes were
first studied as a
class by
Hermann Staudinger before 1905.
Ketenes were
systematically investigated by...
-
cycloadditions of
ketenes have
expanded and
gained synthetic utility.
Examples exist of [2+2], [3+2], and [4+2] cycloaddition, and
conjugated ketenes may act as...
-
hydration mechanism of
ketene: 15
years later". Can. J. Chem. 77 (5–6): 817–829. doi:10.1139/v99-090.
Christoph Taeschler :
Ketenes,
Ketene Dimers, and Related...
- substituents. The
simple ketene (H2C=C=O)
dimerizes to ****tene (4-methylen-oxetan-2-one),
while substituted ketenes, such as
dimethyl ketene (Me2C=C=O, formed...
- the
stereochemistry as well.
Ketenes with
strong electron-donating
substituents mainly produce cis β-lactams,
while ketenes with
strong electron-withdrawing...
- of
ketenes (R2C=C=O).
Sometimes referred to as methyleneketenes,
these compounds are
highly reactive and much more
difficult to
access than
ketenes. Because...
- 4-diphenylisoxazole. Synthetically, they
behave as
ketene precursors or synthons.
Ynols can
interconvert with
ketenes, much like
enols can with
aldehydes and ketones...
- here that he
discovered the
ketenes, a
family of
molecules characterized by the
general form
depicted in
Figure 1.
Ketenes would prove a synthetically...
- by
dimerization of
ketene.
Heating or
irradiation with UV
light regenerates the
ketene monomer: (C2H2O)2 ⇌ 2 CH2CO
Alkylated ketenes also
dimerize with...
- C.
Scaiano (2001). "Nucleophilicity
toward Ketenes: Rate
Constants for
Addition of
Amines to Aryl
Ketenes in
Acetonitrile Solution". J. Org. Chem. 66...
