Results 11 to 20 of about 3,977 (186)

Stereodivergent Access to Aliphatic Nitro Compounds Bearing Multi-Contiguous Stereocenters via Sequential Catalysis. [PDF]

open access: yesAdv Sci (Weinh)
Herein, we report a highly efficient synthesis of aliphatic nitro compounds bearing multi‐contiguous stereocenters in good yields with excellent diastereo‐ and enantio‐selectivities by combining copper‐catalyzed asymmetric conjugate addition of dialkylzinc reagents to nitroalkenes with iridium‐catalyzed asymmetric allylic substitution reaction ...
Xie JH, Hou YM, Wu ZJ, Zheng C, You SL.
europepmc   +2 more sources

Efficient methods for enol phosphate synthesis using carbon-centred magnesium bases [PDF]

open access: yes, 2015
Efficient conversion of ketones into kinetic enol phosphates under mild and accessible conditions has been realised using the developed methods with di-tert-butylmagnesium and bismesitylmagnesium.
Kerr, William J.   +3 more
core   +1 more source

Enantio- and Diastereoconvergent Cyclocondensation Reactions: Synthesis of Enantiopure cis-Decahydroquinolines. [PDF]

open access: yes, 2016
Up to four stereocenters with a well-defined configuration are generated in a single synthetic step by the cyclocondensation of (R)-phenylglycinol or (1S,2R)-1-amino-2-indanol with stereoisomeric mixtures (racemates, meso forms, diastereoisomers) of ...
Amat Tusón, Mercedes   +6 more
core   +1 more source

A Benchmark of Density Functional Approximations For Thermochemistry and Kinetics of Hydride Reductions of Cyclohexanones

open access: yesChemistryOpen, 2019
The performance of density functionals and wavefunction methods for describing the thermodynamics and kinetics of hydride reductions of 2‐substituted cyclohexanones has been evaluated for the first time.
Xavier Deraet   +5 more
doaj   +1 more source

A Diastereoselective Synthesis of Dispiro[oxindole-cyclohexanone]pyrrolidines by 1,3-Dipolar Cycloaddition

open access: yesMolecules, 2017
For the first time, arylmethylidene cyclohexanones that are non-symmetrical due to the presence of peripheral substituents were studied in 1,3-dipolar cycloaddition reactions.
Alexander Anis’kov   +3 more
doaj   +1 more source

Camphor pathway redux: functional recombinant expression of 2,5- and 3,6-diketocamphane monooxygenases of Pseudomonas putida ATCC 17453 with their cognate flavin reductase catalyzing Baeyer-Villiger reactions [PDF]

open access: yes, 2013
Whereas the biochemical properties of the monooxygenase components that catalyze the oxidation of 2,5-diketocamphane and 3,6-diketocamphane (2,5-DKCMO and 3,6-DKCMO, respectively) in the initial catabolic steps of (+) and (−) isomeric forms of camphor ...
Bergeron Helene   +7 more
core   +2 more sources

Synthesis of ketones from biomass-derived feedstock

open access: yesNature Communications, 2017
Conversion of biomass-derived chemicals to industrially relevant products can allow sustainable production of organic compounds. Here the authors report that aromatic ethers, which can be derived for biomass, can be converted into various cyclohexanones ...
Qinglei Meng   +4 more
doaj   +1 more source

Regioselective Ethanolamination and Ketalization of 3-Ph-2,4-diacetyl(diethoxycarbonyl)-5-hydroxy-5-methylcyclohexanones

open access: yesMolecules, 2003
The reaction of 3-phenyl-2,4-diacetyl(diethoxycarbonyl)-5-hydroxy-5-methylcyclohexanones with ethanolamine and ethylene glycol proceeds regioselectively using the carbonyl group of the alicycle to produce the corresponding cyclohexenylethanolamines and ...
Vitaly V. Sorokin   +3 more
doaj   +1 more source

Reactive organoallyl species generated from aryl halides and allene: allylation of alpha,beta-unsaturated aldehydes and cyclic ketones employing Pd/In transmetallation processes [PDF]

open access: yes, 2008
Allylation of α,β-unsaturated aldehydes and cyclic ketones promoted by Pd/In transmetallation processes has been studied. The unsaturated aldehydes underwent regioselective 1,2-addition to afford secondary homoally alcohols.
Anwar   +56 more
core   +2 more sources

Chiral Sulfinamide/Achiral Sulfonic Acid Cocatalyzed Enantioselective Protonation of Enol Silanes [PDF]

open access: yes, 2011
The application of chiral sulfinamides and achiral sulfonic acids as a co-catalyst system for enantioselective protonation reactions is described. Structurally simple, easily accessible sulfinamides were found to induce moderate-to-high eeʼs in the ...
Beck, Elizabeth M.   +2 more
core   +1 more source

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