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Unsaturated Alcohols (unsaturated + alcohol)
Selected AbstractsChemInform Abstract: Pyridinium Chlorochromate Mediated Oxidative Cyclization of Sterically Crowded ,,,-Unsaturated Alcohols.CHEMINFORM, Issue 5 2008A. Srikrishna 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] Sequential Ring-Closing Metathesis/Pd-Catalyzed, Si-Assisted Cross-Coupling Reactions: General Synthesis of Highly Substituted Unsaturated Alcohols and Medium-Sized Rings Containing a 1,3-cis,cis Diene Unit.CHEMINFORM, Issue 5 2005Scott E. Denmark Abstract For Abstract see ChemInform Abstract in Full Text. [source] Effect of the structural parameters of a series of fluoromonoacrylates on the surface properties of cured filmsJOURNAL OF POLYMER SCIENCE (IN TWO SECTIONS), Issue 24 2001B. Ameduri Abstract A series of fluorinated acrylates [F(CF2)q(CH2)pOCOCHCH2, where q = 8 and p = 2 ÷ 11) were synthesized and used as comonomers in the photopolymerization of acrylic systems. These fluoroacrylates were synthesized in a three-step procedure through the radical addition of perfluoroalkyliodides to an unsaturated alcohol followed by their acrylation. The mixtures, containing up to 0.8% (w/w) of the comonomers, produced transparent films after UV curing; they showed changes in the surface properties as a function of the comonomer type and concentration. With contact-angle and X-ray photoelectron spectroscopy analyses, the relationship between the structure of the monomers and the surface properties of the UV-cured films was investigated: the wettability decreased, depending on the length of the fluorinated group (q value) and the hydrogenated segment of the monomer (p value). © 2001 John Wiley & Sons, Inc. J Polym Sci Part A: Polym Chem 39: 4227,4235, 2001 [source] Dehydration and Dehydrogenation of Alcohols with Mononuclear Cationic Vanadium Oxides in the Gas Phase and Energetics of VOnH0/+ (n = 2, 3),EUROPEAN JOURNAL OF INORGANIC CHEMISTRY, Issue 17 2007Marianne Engeser Abstract The ion/molecule reactions of selected alcohols with the vanadium oxide cations VO+ and VO2+ are studied by Fourier-transform ion-cyclotron resonance (FT-ICR) mass spectrometry. Dehydrogenation is the dominating reaction pathway for methanol and allyl alcohols. With larger or less unsaturated alcohols, dehydration and carbocation formations prevail. While the valence in VO+ remains unchanged during alcohol dehydrogenation, VO2+ is reduced to VIII. Thermochemical data for VO2H0/+, VO3H and VO3H2+ are derived by means of ICR bracketing. The experimental results are further complemented by ab initio calculations using density functional theory. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007) [source] Palladium-Catalyzed Formation of Cyclic Ethers , Regio-, Stereo- and Enantioselectivity of the ReactionEUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 14 2007Anna Zawisza Abstract An efficient and stereoselective synthesis of 3-alkyl-3-hydroxymethyl-5-vinyltetrahydrofurans is described by the Pd0 -catalyzed cyclization of the methyl carbonates of ,,,-bis(hydroxymethyl)-,,,-unsaturated alcohols. The use of chiral ligands gave the corresponding THF derivatives in low to moderate enantiomeric ratios. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007) [source] Kinetics and mechanisms of OH-initiated oxidation of small unsaturated alcoholsINTERNATIONAL JOURNAL OF CHEMICAL KINETICS, Issue 3 2010Kenshi Takahashi Smog chamber relative rate techniques were used to measure rate coefficients of (5.00 ± 0.54) × 10,11, (5.87 ± 0.63) × 10,11, and (6.49 ± 0.82) × 10,11 cm3 molecule,1 s,1 in 700 Torr air at 296 ± 1 K for reactions of OH radicals with allyl alcohol, 1-buten-3-ol, and 2-methyl-3-buten-2-ol, respectively; the quoted uncertainties encompass the extremes of determinations using two different reference compounds. The OH-initiated oxidation of allyl alcohol in the presence of NOx gives glycolaldehyde in a molar yield of 0.85 ± 0.08; the quoted uncertainty is two standard deviations. Oxidation of 2-methyl-3-buten-2-ol gives acetone and glycolaldehyde in molar yields of 0.66 ± 0.06 and 0.56 ± 0.05, respectively. The reaction of OH radicals with allyl alcohol, 1-buten-3-ol, and 2-methyl-3-buten-2-ol proceeds predominately via addition to the >CCH2 double bond with most of the addition occurring to the terminal carbon. © 2010 Wiley Periodicals, Inc. Int J Chem Kinet 42: 151,158, 2010 [source] | ||||||||||