Results 21 to 30 of about 3,977 (186)

The Mechanism of Addition of Diazo-alkanes to Cyclopropanones [PDF]

open access: yes, 1969
The addition of diazo-alkanes to cyclopropanones yields cyclobutanones whose structures may be predicted on the basis of conformational regulation of the migrating carbon-carbon ...
Gagosian, Robert B., Turro, Nicholas J.
core   +2 more sources

The search for tolerant Lewis acid catalysts. Part2: enantiopure cycloalkyldialkylsilyl triflimide catalysts [PDF]

open access: yes, 2007
A series of 2-aryl-and arylmethyl-3-dialkylphenylsilyl cycloalkanones have been prepared and resolved. The pure enantiomers were reduced to the corresponding cycloalkane derivatives.
Dive, Georges   +4 more
core   +1 more source

Using Long‐Chain Polymechanophores to Explore the Differences in Mechanoactivation During Nozzle Flow and Ultrasonication

open access: yesAdvanced Functional Materials, EarlyView.
Flow through a nozzle is a common component of most fluid‐based polymer processing techniques such as spray drying, inkjet printing, extrusion. An ultrahigh molecular weight multi‐mechanophore system is used to probe the differences in the distribution of mechanical activation observed between nozzle flow and ultrasonication; the gold standard ...
Niamh Willis‐Fox   +4 more
wiley   +1 more source

Acetoxymaleic Anhydride as Ketene Equivalent in the Diels-Alder Reaction

open access: yesCHIMIA, 1992
Acetoxymaleic anhydride (AMA) has been shown to be a versatile ketene equivalent in the Diels-Alder reaction for the conversion of 1,3-dienes into cyclohexanones.
Ernest Wenkert   +2 more
doaj   +2 more sources

Hydroxyl-substituted double Schiff-base condensed 4-piperidone/cyclohexanones as potential anticancer agents with biological evaluation

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2019
Novel hydroxyl-substituted double Schiff-base 4-piperidone/cyclohexanone derivatives, 3a–e, 4a–e, 5a–d, and 6a–c, were synthesized and fully characterized by 1H NMR, IR and elemental analysis.
Lianshuang Zhang   +4 more
doaj   +1 more source

Solvent-Free Enantioselective Organocatalyzed Aldol Reactions [PDF]

open access: yes, 2014
The use of proline as catalyst for the aldol process has given a boost to the development of organocatalysis as a research area. Since then, a plethora of organocatalysts of diverse structures have been developed for this and other organic ...
Bañón Caballero, Abraham   +2 more
core   +2 more sources

Inter‐Atomic Synergy on Single‐Atom Alloy Promotes Cyclohexanone Oxime Electrosynthesis

open access: yesAdvanced Materials, EarlyView.
Electrosynthesis of cyclohexanone oxime using renewable electricity offers a greener alternative to traditional energy‐intensive methods. Here, we develop a Fe1Bi single‐atom alloy that delivers 70.9% Faradaic efficiency and 0.94 mmol cm−2 h−1 yield rate through the atomic‐scale synergistic mechanism.
Panlong Zhai   +10 more
wiley   +1 more source

Enantioselective aldol reactions with aqueous 2,2-dimethoxyacetaldehyde organocatalyzed by binam-prolinamides under solvent-free conditions [PDF]

open access: yes, 2014
Aqueous 2,2-dimethoxyacetaldehyde (60% wt solution) is used as an acceptor in aldol reactions, with cyclic and acyclic ketones and aldehydes as donors, organocatalyzed by 10 mol % of N-tosyl-(Sa)-binam-l-prolinamide [(Sa)-binam-sulfo-l-Pro] at rt under ...
Bañón Caballero, Abraham   +3 more
core   +2 more sources

TADF‐Emitting Dendrimers for Scalable Bar‐Coating Fabrication of Light‐Emitting Electrochemical Cells

open access: yesAdvanced Materials Technologies, EarlyView.
TADF‐emitting dendrimers promise to enable scalable solution‐based fabrication of efficient electroluminescent devices by the virtue of an attractive set of properties. Here, we report on how light‐emitting electrochemical cells, comprising the TADF‐dendrimer tBuCz2m2pTRZ, can be fabricated by scalable bar‐coating under ambient air and deliver uniform ...
Shi Tang   +5 more
wiley   +1 more source

Electrocatalytic Nitrate Reduction to Hydroxylamine: Breaking the Activity‐Selectivity Trade‐Off by Designer Bifunctional Metal‐Organic Frameworks

open access: yesAngewandte Chemie, Volume 138, Issue 11, 9 March 2026.
A bifunctional metal‐organic framework (MOF) catalyst with dual active sites is developed for enabling NH2OH electrosynthesis via NitRR with both high selectivity and activity. ABSTRACT Electrocatalytic nitrate reduction reaction (NitRR) offers a promising route for hydroxylamine (NH2OH) synthesis under ambient conditions.
Yingying Zou   +9 more
wiley   +2 more sources

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