KSIĄŻKI POWIĄZANE ZE SŁOWEM «ALDOLIZATION»
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1
Fine Chemicals through Heterogeneous Catalysis
7.2 Aldol Condensations Catalyzed by Hydrotalcites Francois Figueras, Joseph
Lopez 7.2.1 Introduction Aldolization is widely used in organic chemistry,
because it enables the creation of C-C bonds. It is commonly used to
manufacture ...
R. A. Sheldon, Herman van Bekkum, 2008
2
Catalysis of Organic Reactions
Table 1 The values of the slopes of the cD-cx (aldol - ethylacrolein) curves for the
aldolization of butyraldehyde in methanolic and aqueous environment As can be
observed in Tables 1 and 2, a clearly better product distribution with respect to ...
First, syn—anti equilibration can be much slower than reverse aldolization, if the
enolate produced has a high inherent diastereoselectivity. For example, the Z
enolate of ethyl tert-butyl ketone shows syn-anti selectivity of 80 : l in its reaction ...
4
Benzylidene Compounds—Advances in Research and Application: ...
According to news reporting from Wuhan, People's Republic of China, by
NewsRx journalists, research stated, “The aldolization of formaldehyde and
acetone to form 4-hydroxy-2-butanone over anion exchange resins with and
without ...
5
Stereoselective Organocatalysis: Bond Formation ...
3.4.1 Aldols with Two Stereogenic Centers Formed in the Cross—Aldol Reaction
34JJ1SeH4MdoIReacfions The first self-aldolization of the simplest aldehyde (
e.g., acetaldehyde) was reported by Hayashi's group in 2008 [126].
6
Monosaccharide Sugars: Chemical Synthesis by Chain ...
Physicochemical studies aimed at the investigation of the aldolization of trioses
have shown36 that the reaction is first-order with respect to glyceraldehyde, and
the ratedetermining step is the formation of a carbanion from dihydroxyacetone.
Zoltan Gyorgydeak, Istvan Pelyvas, 1998
7
Organometallics in Synthesis, Third Manual
[684] Accordingly, a sequence of pentacarbonyliron-catalyzed lsomerization,
aldolization, and dehydration can be exploited to transform vinyl sugars into
substituted cyclopentenones (Scheme 4—295). The latter represent versatile ...
8
Modern Methods in Stereoselective Aldol Reactions
97-99% ee) The 5-(enolexo)-exo-trig aldolization process of compound 15 (
Scheme Q) catalyzed by proline gave the cyclic derivative 16 with diastereomeric
excess from 71% to 99% [26]. The RZ-substituent had a very important effect, with
...
9
Oxford English Dictionary Additions Series
3) xi. 271 The aldehyde derivatives of two lysine residues undergo an aldol
condensation. 1992 Organometallics XI. 350 Cerium enolates. .undergo aldol
reactions with ketones or sterically hindered aldehydes. aldolization (aldolai'zeij'
on), n.
J. A. Simpson, Michael Proffitt, E. S. C. Weiner, 1997
10
Biocatalysis: From Discovery to Application
The aldol addition of aldehyde 38 and acetone to give aldols 39 is an excellent
test reaction for a catalytic aldolization. We found that anti-33 antibodies combine
with primary amine 37 to form an aldolase antibody which catalyzes the reaction
...
