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Unsaturated Ketones (unsaturated + ketone)

Distribution by Scientific Domains
Chemistry100%
Distribution within Chemistry
Organic Chemistry75%
General & Introductory Chemistry23%

Selected Abstracts

CAN- and Iodine-Catalyzed Reaction of Indole or 1-Methylindole with ,,,-Unsaturated Ketone or Aldehyde.

CHEMINFORM, Issue 18 2006
Shengkai Ko
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]

An Efficient Synthesis of 1,5-Benzodiazepine Derivatives by Lanthanide Trichloride-catalyzed Condensation of o -Phenylenediamine with ,,, -Unsaturated Ketone under Mild Conditions

CHINESE JOURNAL OF CHEMISTRY, Issue 7 2008
Shan-E FENG
Abstract The condensation of o -phenylenediamine with various ,,, -unsaturated ketones was efficiently catalyzed by lanthanide trichloride and a variety of 1,5-benzodiazepines were synthesized in moderate to high yields under mild conditions. The reactions catalyzed by ytterbium trichloride were investigated emphatically. [source]

Organocatalytic Enantioselective Michael Addition of 4-Hydroxycoumarin to ,,,-Unsaturated Ketones: A Simple Synthesis of Warfarin

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 30 2009
Zhenhua Dong
Abstract A type of C2 -symmetric secondary amine amide catalysts were developed for the asymmetric Michael addition of 4-hydroxycoumarin to ,,,-unsaturated ketones. A series of important biologically and pharmaceutically active compounds were obtained in excellent yields (up to 99,%) with high enantioselectivities (up to 89,%,ee) under mild conditions. In addition, enantiopure product could be obtained by a single recrystallization. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) [source]

Val-Ala Dipeptide Isosteres by Hydrocyanation of ,,-Amino ,,,-Unsaturated Ketones , Control of Stereoselectivity by the N -Protecting Group

EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 10 2003
Fabio Benedetti
Abstract Three diastereoisomeric hydroxyethylene isosters of the Val-Ala dipeptide were synthesized from ,,,-unsaturated ketones 1 derived from N -Boc- and N,N -dibenzyl- L -valine. The enones were hydrocyanated with diethylaluminum cyanide to give the corresponding ,-cyano ketones with the stereoselectivity depending on the protecting group. N -Boc protected enone 1a gave a 1:1 mixture of anti and syn adducts 4a, 5a while the corresponding N,N -dibenzyl compound 1c gave a 6:1 mixture of anti, syn adducts 4c, 5c. Borohydride reduction of the resulting cyano ketones is also controlled by the protecting group, resulting in opposite stereoselectivities for N -Boc and N,N -dibenzyl compounds. The cyano alcohols thus obtained were converted, in several steps, into two series of enantiomerically pure hydroxyethylene isosters of the Val-Ala dipeptide. In the first series the hydroxy group and the N -terminal of the isoster are internally protected through the formation of an oxazolidine; in the second series the hydroxy group and the C-terminal are protected as lactone. Two oxazolidines (28, 29), corresponding to syn,syn and syn,anti 4-hydroxy-5-amino acid isosters, and three lactones (23,25), corresponding to syn,syn, syn,anti, and anti,anti isosters were obtained by this approach. (© Wiley-VCH Verlag GmbH & Co KGaA, 69451 Weinheim, Germany, 2003) [source]

Highly Enantioselective Iridium-Catalyzed Hydrogenation of Trisubstituted Olefins, ,,,-Unsaturated Ketones and Imines with Chiral Benzylic Substituted P,N Ligands

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1 2010
Wei-Jing Lu
Abstract The benzylic substituted P,N ligands, diphosphinobenzyloxazolines, showed their high catalytic activity as well as asymmetric induction in the iridium-catalyzed asymmetric hydrogenation of unfunctionalized alkenes, ,,,-unsaturated esters, allyl alcohols, ,,,-unsaturated ketones, and imines, providing the corresponding chiral products in high ee with high conversion. [source]

Highly Efficient and Selective Synthesis of (E)-,,,-Unsaturated Ketones by Crossed Condensation of Ketones and Aldehydes Catalyzed by an Air-Stable Cationic Organobismuth Perfluorooctanesulfonate

ADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 1 2010
Renhua Qiu
Abstract An air-stable cationic organobismuth perfluorooctanesulfonate possessing both acidic and basic characters was synthesized, and showed high catalytic activity, diastereoselectivity, stability, and reusability in the one-pot synthesis of (E)-,,,-unsaturated ketones through highly selective crossed condensation of ketones and aldehydes in water. [source]

Chiral Tetrafluorobenzobarrelenes as Effective Ligands for Rhodium-Catalyzed Asymmetric 1,4-Addition of Arylboroxines to ,,,-Disubstituted ,,,-Unsaturated Ketones,

ANGEWANDTE CHEMIE, Issue 23 2010
Ryo Shintani Dr.
Quartäre Kohlenstoffstereozentren werden durch die rhodiumkatalysierte 1,4-Addition leicht zugänglicher Arylboronsäureanhydride an ,,,-disubstituierte ,,,-ungesättigte Ketone in Gegenwart eines chiralen Tetrafluorbenzobarrelen-Liganden hoch enantioselektiv aufgebaut. [source]

Atomically Precise Au25(SR)18 Nanoparticles as Catalysts for the Selective Hydrogenation of ,,,-Unsaturated Ketones and Aldehydes,

ANGEWANDTE CHEMIE, Issue 7 2010
Yan Zhu Dr.
Eine glänzende Gelegenheit: Eine Erklärung für den chemoselektiven Verlauf der Hydrierung ,,,-ungesättigter Ketone (oder Aldehyde) zu ungesättigten Alkoholen mit monodispersen Au25(SR)18 -Partikeln als Katalysator wird vorgeschlagen (siehe Bild). Dank der nun bekannten Struktur dieser Nanopartikel können Struktur-Aktivitäts-Beziehungen aufgestellt werden. [source]

ChemInform Abstract: The Michael Addition of Indoles and Pyrrole to ,-, ,-Unsaturated Ketones and Double-Conjugate 1,4-Addition of Indoles to Symmetric Enones Promoted by Pulverization-Activation Method and Thia-Michael Addition Catalyzed by Wet Cyanuric Chloride.

CHEMINFORM, Issue 36 2010
Ramin Ghorbani-Vaghei
Abstract The formation of cyanuric acid in wet cyanuric chloride catalyzes the solvent-free addition of indole, pyrrole, and thiols to ,,,-unsaturated ketones. [source]

ChemInform Abstract: Stereoselective Cycloaddition of N-Acyliminium Ions with ,,,-Unsaturated Ketones and Esters.

CHEMINFORM, Issue 30 2010
Lingfeng Qian
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Expanding the Scope of Enantioselective FerroPHANE-Promoted [3 + 2] Annulations with ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 21 2010
Nathalie Pinto
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Chiral Primary,Secondary Diamines Catalyzed Michael,Aldol,Dehydration Reaction Between Benzoylacetates and ,,,-Unsaturated Ketones: Highly Enantioselective Synthesis of Functionalized Chiral Cyclohexenones.

CHEMINFORM, Issue 18 2010
Ying-Quan Yang
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Intermolecular Rhodium-Catalyzed Hydroacylation of Allenes: The Regioselective Synthesis of ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 44 2009
Helen E. Randell-Sly
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Gallium Trichloride-Catalyzed Conjugate Addition of Indole and Pyrrole to ,,,-Unsaturated Ketones in Aqueous Media.

CHEMINFORM, Issue 42 2009
Rong Xu
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Self-Supported BINOL-Zn Catalysts for Heterogeneous Enantioselective Epoxidation of (E)-,,,-Unsaturated Ketones.

CHEMINFORM, Issue 34 2009
Haiming Wang
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Preparation of Bicyclic 1,2,4-Trioxanes from ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 25 2009
Armando P. Ramirez
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Copper Powder Catalyzed Regio- and Stereoselective Aminobromination of ,,,-Unsaturated Ketones with TsNH2 and NBS as Nitrogen and Halogen Sources.

CHEMINFORM, Issue 24 2009
Zhan-Guo Chen
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Enantioselective Organocatalytic Michael Addition of Malonates to ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 24 2009
Pengfei Li
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Catalytic Asymmetric 1,3-Dipolar Cycloaddition of Azomethine Ylides with ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 24 2009
Jorge Hernandez-Toribio
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Ruthenium Hydride Catalyzed Addition of Aldehydes to Dienes Leading to ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 9 2009
Sohei Omura
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Diene Hydroacylation from the Alcohol or Aldehyde Oxidation Level via Ruthenium-Catalyzed C,C Bond-Forming Transfer Hydrogenation: Synthesis of ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 9 2009
Fumitoshi Shibahara
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Asymmetric Aza-Michael Reactions of ,,,-Unsaturated Ketones with Bifunctional Organic Catalysts.

CHEMINFORM, Issue 5 2009
Xiaojie Lu
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Platinum-Catalyzed 1,4-Addition of Arylboronic Acids to ,-Substituted ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 2 2009
Tamio Hayashi
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Highly Chemo- and Enantioselective Hydrogenation of Linear ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 1 2009
Sheng-Mei Lu
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Asymmetric Multifunctional Organocatalytic Michael Addition of Nitroalkanes to ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 47 2008
Pengfei Li
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Chiral Tertiary Amine N-Oxides in Asymmetric Epoxidation of ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 26 2008
Kyungsoo Oh
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Highly Chemo- and Diastereoselective Synthesis of Substituted Tetrahydropyran-4-ones via Organocatalytic oxa-Diels,Alder Reactions of Acyclic ,,,-Unsaturated Ketones with Aldehydes.

CHEMINFORM, Issue 25 2008
Liang-Qiu Lu
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Highly Enantioselective Michael Addition of Malononitrile to ,,,-Unsaturated Ketones.

CHEMINFORM, Issue 21 2008
Xuefeng Li
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Rh-Catalyzed Novel ,-Fluoroalkylation of ,,,-Unsaturated Ketones and Its Mechanism.

CHEMINFORM, Issue 15 2008
Akira Ando
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]

ChemInform Abstract: Synthesis of ,,,-Unsaturated Ketones from Acid Chlorides Through Carbon,Pentamethylcyclopentadienyl Bond Formation and Cleavage.

CHEMINFORM, Issue 15 2008
Minoru Uemura
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]