Home About us Contact | |||
Tandem Reaction (tandem + reaction)
Kinds of Tandem Reaction Terms modified by Tandem Reaction Selected AbstractsAsymmetric Organocatalytic Tandem Reaction to Chiral Pyrimidinone Derivatives using Urea as Dinitrogen SourceADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 11-12 2010Zhao-Quan He Abstract A facile method for the asymmetric synthesis of pyrimidinone derivatives was developed via an organocatalytic tandem aza-Michael addition,hemiaminal formation,dehydroxylation reaction, using N,N, -dialkyloxyurea as dinitrogen source (up to 97% ee). The transformations of hemiaminal intermediates to pyrimidinones with more complex structures have been also investigated. [source] Facile Assembly of H -Pyrazolo[5,1- a]isoquinolines via Silver Triflate-Catalyzed One-Pot Tandem Reaction of 2-Alkynyl- benzaldehyde, Sulfonohydrazide, and Ketone or AldehydeADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 11-12 2010Xingxin Yu Abstract A novel and efficient route for the generation of H -pyrazolo[5,1- a]isoquinolines via silver triflate-catalyzed one-pot tandem reaction of 2-alkynylbenzaldehyde, sulfonohydrazide, and ketone or aldehyde is described. This reaction proceeds with good functional group tolerance under mild conditions with high efficiency and excellent selectivity. [source] Silver Triflate-Catalyzed or Electrophile-Mediated Tandem Reaction of N, -(2-Alkynylbenzylidene)hydrazides with Dimethyl AcetylenedicarboxylateADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 10 2009Zhiyuan Chen Abstract Different outcomes were generated under different conditions for the tandem reactions of N, -(2-alkynylbenzylidene)hydrazides with dimethyl acetylenedicarboxylate (DMAD) catalyzed by silver triflate or in the presence of electrophiles. The unexpected isoquinoline-based azomethine ylides were obtained when the reaction was catalyzed by silver triflate or in the presence of bromine, while the fused 1,2-dihydroisoquinolines were afforded when iodine was employed in the above tandem reactions. [source] A Base-Promoted Tandem Reaction of 3-(1-Alkynyl)chromones with 1,3-Dicarbonyl Compounds: An Efficient Approach to Functional Xanthones,ANGEWANDTE CHEMIE, Issue 35 2009Lizhi Zhao Ohne Übergangsmetallkatalysator liefert der hier vorgestellte Tandemprozess funktionalisierte Xanthone. Die Abfolge umfasst Reaktionen wie eine Michael-Addition/Eliminierung, Cyclisierung, 1,2-Addition und Eliminierung (siehe Schema). [source] ChemInform Abstract: Highly Regio- and Stereoselective Intermolecular Tandem Reaction to Synthesize Chloro-substituted 1,3-Butadienes.CHEMINFORM, Issue 24 2010Jing-Mei Huang 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: Silver Triflate Catalyzed or Electrophile-Mediated Tandem Reaction of N,-(2-Alkynylbenzylidene)hydrazides with Dimethyl Acetylenedicarboxylate.CHEMINFORM, Issue 49 2009Zhiyuan 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: Iron(III)-Catalyzed and Air-Mediated Tandem Reaction of Aldehydes, Alkynes and Amines: An Efficient Approach to Substituted Quinolines.CHEMINFORM, Issue 43 2009Ke Cao 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: A One-Pot, Stereoselective Synthesis of 2-Ethoxycarbonyl-Substituted 1,3-Dienes and 1,3-Enynes by Hydrostannylation , Stille Tandem Reaction of Tributyltin Hydride with Alkynyl Esters and Alkenyl or Alkynyl Halides.CHEMINFORM, Issue 41 2009Mingzhong Cai 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: Facile Stereoselective Synthesis of Fluorinated Flavanone Derivatives via a One-Pot Tandem Reaction.CHEMINFORM, Issue 24 2009Haifeng Cui 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: FeCl3 -Catalyzed Propargylation,Isomerization Tandem Reaction: A Facile One-Pot Synthesis of Substituted Furans.CHEMINFORM, Issue 15 2009Wen-hua Ji 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: An Unexpected Diethyl Azodicarboxylate Promoted Dehydrogenation of Tertiary Amine and Tandem Reaction with Sulfonyl Azide.CHEMINFORM, Issue 8 2009Xiaoliang 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: A New Synthesis of Hemialdals and Their Stereoselective Tandem Reaction in the Construction of 1,3-Dioxolane Derivatives.CHEMINFORM, Issue 4 2009Qiyun Shao 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: A One-Pot Stereoselective Synthesis of 1,4-Dienyl Selenides by Hydrostannylation,Stille Tandem Reaction of Acetylenic Selenides with Bu3SnH and Allylic Bromides.CHEMINFORM, Issue 49 2008La Mei Yu 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: Sc(OTf)3 -Catalyzed or tBuOK-Promoted Tandem Reaction of 2-(2-(Alkynyl)benzylidene)malonate with Indole.CHEMINFORM, Issue 42 2008Ke Gao 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: A One-Pot, Stereoselective Synthesis of (Z)-2-Sulfonyl-Substituted 1,3-Enynes by Hydrostannylation-Stille Tandem Reaction of Acetylenic Sulfones.CHEMINFORM, Issue 34 2008Hong Zhao 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: Novel Tandem Reaction of Benzyne with Cyclic Ethers and Active Methines: Synthesis of ,-Trichloroalkyl Phenyl Ethers.CHEMINFORM, Issue 32 2008Kentaro Okuma 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] Efficient Synthesis of 3-Arylaminopyrroline-2-ones by the Tandem Reaction of Anilines and ,,,-Unsaturated ,-Ketoesters.CHEMINFORM, Issue 52 2006Yan-Chao Wu 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] Efficient C,C Double-Bond Formation Reaction via a New Synthetic Strategy: A Self-Sorting Tandem Reaction.CHEMINFORM, Issue 40 2006Guodong Yin 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] Hydrogenation/Regioselective C-Acylation Reaction of Diethyl Coumarin-3-phosphonate with NaBH4/Acid Anhydrides: A New One-Pot Tandem Reaction.CHEMINFORM, Issue 34 2006Nevena I. Petkova 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] Synthesis of Substituted 1-Thiocyanatobutadienes and Their Application in a Diels,Alder/[3,3] Sigmatropic Rearrangement Tandem Reaction.CHEMINFORM, Issue 35 2005Sebastien Lanaspeze Abstract For Abstract see ChemInform Abstract in Full Text. [source] Synthesis of ,,,-Disubstituted Amino Acids Based on Tandem Reaction of Dehydroamino Acid Derivatives.CHEMINFORM, Issue 21 2005Hideto Miyabe Abstract For Abstract see ChemInform Abstract in Full Text. [source] N-Allyl-1,3-oxazines via a Facile Keto-ene/Cyclization Tandem Reaction.CHEMINFORM, Issue 46 2004Robert G. Brinson Abstract For Abstract see ChemInform Abstract in Full Text. [source] Free Radical-Mediated Tandem Reaction of Dehydroamino Acid Derivative with ,-Allyl Palladium Complex: Synthesis of ,,,-Disubstituted Amino Acids.CHEMINFORM, Issue 25 2004Hideto Miyabe Abstract For Abstract see ChemInform Abstract in Full Text. [source] A New Methodology for Synthesis of a Chiral Phosphinocarboxylic Acid Through Michael Cyclization,Aldol Tandem Reaction of Chiral ,,,,,,,-Unsaturated Bisphosphine Oxide and Application in Palladium-Catalyzed Asymmetric Allylic Alkylation.CHEMINFORM, Issue 3 2003Hediki Inoue No abstract is available for this article. [source] A Tandem Reaction of 4-Bromoalkyl Aldehydes with Sodium Azide: Synthesis of 5,6,7,7a-Tetrahydro-pyrrolo[1,2-d]-[1.2.3.4]oxatriazole.CHEMINFORM, Issue 38 2002Yuan Ma Abstract For Abstract see ChemInform Abstract in Full Text. [source] An Organocatalytic Asymmetric Tandem Reaction for the Construction of Bicyclic SkeletonsCHEMISTRY - A EUROPEAN JOURNAL, Issue 42 2009Chun-Li Cao Dr. Abstract Cyclic ketones react with (E)-2-nitroallylic acetates in the presence of catalytic pyrrolidine-thiourea, which affords bicyclic skeletons with four or five stereocenters in one single reaction with up to 98,%,ee in moderate to high yields. The cooperative effects of both enamine and the Brønsted acid are found to be crucial for the high reactivity and enantioselectivity of this cascade reaction, which is demonstrated by both theoretical calculation and experimental data. [source] Efficient Method for the Synthesis of Optically Active 2-Amino-2-chromene Derivatives via One-Pot Tandem ReactionsADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 18 2009Jian-Wu Xie Abstract The asymmetric synthesis of functionalized 2-amino-2-chromene derivatives with high enantioselectivities via one-pot tandem reactions of functionalized ,,,-unsaturated ketones with malononitrile catalyzed by 9-amino-9-deoxyepiquinine (1a) in combination with (R)-1,1,-binaphth-2,2,-diyl hydrogen phosphate (1c) is reported for the first time. [source] Multicatalytic Tandem Reactions of 2-Alkynylbenzaldoximes with IsocyanidesADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 16 2009Zhiyuan Chen Abstract An efficient tandem reaction of 2-alkynylbenzaldoximes with isocyanides co-catalyzed by silver triflate and bismuth triflate has been developed, which gives rise to the unexpected N -(isoquinolin-1-yl)formamides in good to excellent yields. The iodo- and bromo-containing products could be obtained as well by variation of the reaction conditions. [source] Iron-Catalyzed Tandem Reactions of 2-Halobenzenamines with Isothiocyanates Leading to 2-AminobenzothiazolesADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 14-15 2009Jing-Wen Qiu Abstract A highly practical method for the synthesis of 2-aminobenzothiazoles has been developed through an iron-catalyzed tandem reaction. The present tandem process allows the assembly of a wide range of 2-aminobenzothiazoles by the reactions of 2-halobenzenamines with isothiocyanates. [source] Copper/Iron-Cocatalyzed Highly Selective Tandem Reactions: Efficient Approaches to Z- ,-Alkylidene LactonesADVANCED SYNTHESIS & CATALYSIS (PREVIOUSLY: JOURNAL FUER PRAKTISCHE CHEMIE), Issue 4 2009Si Li Abstract Inexpensive copper/iron-cocatalyzed, efficient, highly regioselective and stereoselective one-pot tandem conjugate addition,cyclization,hydrolysis,decarboxylation reactions have been developed, which provide efficient tandem reactions for CC and CO bond formation, and the novel synthetic methods of ,-alkylidenebutyrolactones. [source] |