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Efficient Reagent (efficient + reagent)
Selected Abstracts1,4-Diazabicyclo[2.2.2]octane (DABCO) as an Efficient Reagent for the Synthesis of Isoxazole Derivatives from Primary Nitro Compounds and Dipolarophiles: The Role of the BaseEUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 21 2006Luca Cecchi Abstract The dehydration of primary nitro compounds can be performed by bases in the presence of dipolarophiles. The reactivity of several tertiary amines or azaheteroaromatic compounds containing one or two basic centres is shown to be related to the ability of the protonated base to establish H-bonded ion pairs with the adduct that is formed from the nitronate and the dipolarophile in chloroform. Among the organic bases examined, caged tertiary diamine 1,4-diazabicyclo[2.2.2]octane (DABCO) gave the best results. The reaction is applicable to activated nitro compounds and to phenylnitromethane and affords isoxazoline derivatives in higher yields compared with those of other methods. The reaction, however, is not compatible with nitroalkanes. The proposed mechanism of the reaction is based on the collapse of the H-bonded ion pair. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2006) [source] ChemInform Abstract: 2,4,6-Trichloro-1,3,5-triazine/dimethylformamide as an Efficient Reagent for One-Pot Conversion of Alcohols into N-Alkylphthalimides.CHEMINFORM, Issue 26 2010Babak Mokhtari 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: Trichloroisocyanuric Acid,KF as an Efficient Reagent for One-Pot Synthesis of Dialkylfluorophosphates from Dialkylphosphites.CHEMINFORM, Issue 14 2009J. Acharya 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: Hexabromoacetone and Ethyl Tribromoacetate: A Highly Efficient Reagent for Bromination of Alcohol.CHEMINFORM, Issue 24 2008Pratoomrat Tongkate 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: DCC,Celite Hybrid Immobilized Solid Support as a New, Highly Efficient Reagent for the Synthesis of O-Alkyl Hydrogen Alkylphosphonates under Solvent-Free Conditions.CHEMINFORM, Issue 24 2008A. K. Gupta 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: Stannic Chloride,Iodine: An Efficient Reagent for Regioselective Synthesis of Furan-Fused Heterocycles.CHEMINFORM, Issue 6 2008K. C. Majumdar 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: N,N,-Dichlorobis(2,4,6-trichlorophenyl)urea (CC-2): An Efficient Reagent for Conversion of Oximes to Ketones.CHEMINFORM, Issue 2 2008Arvind K. Gupta 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: 1-(Chloromethyl)-4-fluoro-1,4-diazoniabicyclo-[2,2,2]octane Bis(tetrafluoroborate) as Novel and Efficient Reagent for the Conjugate Addition of Indoles to ,,,-Unsaturated Ketones.CHEMINFORM, Issue 2 2008J. S. Yadav 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] Cerium Ammonium Nitrate (CAN) for Mild and Efficient Reagent to Remove Hydroxyethyl Units from 2-Hydroxyethyl Ethers and 2-Hydroxyethyl Amines.CHEMINFORM, Issue 18 2007Hiromichi Fujioka 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] Trichloroisocyanuric Acid: An Efficient Reagent for the Synthesis of Dialkyl Chlorophosphates from Dialkyl Phosphites.CHEMINFORM, Issue 46 2005J. Acharya Abstract For Abstract see ChemInform Abstract in Full Text. [source] P2O5/SiO2 as an Efficient Reagent for the Preparation of Z-Aldoximes under Solvent-Free Conditions.CHEMINFORM, Issue 44 2005Hossein Eshghi No abstract is available for this article. [source] Alumina-Ammonium Acetate as an Efficient Reagent for the One-Pot Synthesis of cis-2,4,5-Triarylimidazolines from Aromatic Aldehydes.CHEMINFORM, Issue 23 2005Babak Kaboudin Abstract For Abstract see ChemInform Abstract in Full Text. [source] ZnI2/NaCNBH3 as an Efficient Reagent for Regioselective Ring Opening of the Benzylic Epoxide Moiety.CHEMINFORM, Issue 31 2004L. M. Funkielsztein No abstract is available for this article. [source] ChemInform Abstract: The Mn(acac)3 -RCN-CCl4 System as a New Efficient Reagent for the Oxidation of Secondary Alcohols into Ketones.CHEMINFORM, Issue 49 2002R. I. Khusnutdinov 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: DBU, a Highly Efficient Reagent for the Facile Regeneration of (Hetero)arylamines from Their Acetamides and Benzamides: Influence of Solvent, Temperature, and Microwave Irradiation.CHEMINFORM, Issue 25 2002Manas Chakrabarty 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] |