15261-41-3Relevant academic research and scientific papers
Nonracemic Dimethylphenyl Glycerol Ethers in the Synthesis of Physiologically Active Aminopropanols
Bredikhina,Kurenkov,Bredikhin
, p. 837 - 844 (2019/08/02)
Six regioisomeric nonracemic dimethylphenyl glycerol ethers were synthesized by asymmetric dihydroxylation of the corresponding allyl dimethylphenyl ethers. The enantioselectivity of the reaction with o-methyl derivatives was lower (down to 34% ee) than with m-methylphenyl ethers (up to 86% ee). Enantiomeric 3-(3,4-dimethylphenoxy)propane-1,2-diols were used to obtain enantiomerically pure physiologically active amino alcohols and their derivatives.
Visible-light-induced thiotrifluoromethylation of terminal alkenes with sodium triflinate and benzenesulfonothioates
Kong, Weiguang,An, Hejun,Song, Qiuling
supporting information, p. 8968 - 8971 (2017/08/15)
An unconventional reductive quenching cycle was developed to realize the visible-light-induced thiotrifluoromethylation of terminal alkenes. CF3SO2Na was used as an easy to handle CF3 radical source to afford the desired products in moderate to good yields. Mild reaction conditions and a broad substrate scope feature in this transformation.
Building multivalent iminosugar-based ligands on calixarene cores via nitrone cycloadditions
Cardona, Francesca,Isoldi, Giovanni,Sansone, Francesco,Casnati, Alessandro,Goti, Andrea
scheme or table, p. 6980 - 6988 (2012/10/23)
A novel and challenging approach for the construction of multivalent iminosugar architectures directly on calixarene scaffolds is presented, which exploits multiple cycloaddition reactions of a carbohydrate-derived nitrone on diversely functionalized cali
Volatile organic compound sensing by gold nanoparticles capped with calix[4]arene ligand
Kimura, Mutsumi,Yokokawa, Mei,Sato, Seiko,Fukawa, Tadashi,Mihara, Takashi
supporting information, p. 1402 - 1404 (2013/05/09)
Gold nanoparticles capped with calix[4]arene ligands have been designed and synthesized for highly sensitive and selective VOC sensing. Mass sensors coated with porous nanoparticle films displayed a good response toward toluene gas.
Synthesis and antioxidant activity of alkyl 3-(4-hydroxyaryl)propyl sulfides
Prosenko,Markov,Khomchenko,Boiko,Terakh,Kandalintseva
, p. 442 - 446 (2007/10/03)
4-Alkylthiopropylphenols were synthesized from corresponding 2,6-dialkylphenols via the allyl derivative. A comparative study of the antioxidant activity of the prepared compounds was carried out in five model systems. The rate constants for the reactions
Process for preparing aryl allyl ethers
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, (2008/06/13)
A process for preparing an allyl ether including reacting (a) a phenolic compound with (b) an allyl carboxylate or an allyl carbonate in the presence of (c) a transition metal or rare earth metal catalyst complexed with at least one strongly bonded, non-replaceable stable ligand whereby an allyl ether is formed. The ligand of the transition metal or rare earth metal catalyst complex may be (i) an olefinic-containing ligand or aromatic-containing ligand; or (ii) a polymeric ligand or a heteroatom-containing multidentate ligand.
Process for preparing aryl allyl ethers
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Page 15, (2008/06/13)
A process for preparing an allyl ether including reacting (a) a phenolic compound with (b) an allyl carboxylate or an allyl carbonate in the presence of (c) a transition metal or rare earth metal catalyst complexed with at least one strongly bonded, non-replaceable stable ligand whereby an allyl ether is formed. The ligand of the transition metal or rare earth metal catalyst complex may be (i) an olefinic-containing ligand or aromatic-containing ligand; or (ii) a polymeric ligand or a heteroatom-containing multidentate ligand.
Thermodynamic, spectroscopic, and density functional theory studies of allyl aryl and prop-1-enyl aryl ethers. Part 1. Thermodynamic data of isomerization
Taskinen, Esko
, p. 1824 - 1834 (2007/10/03)
A chemical equilibration study of the relative thermodynamic stabilities of seventy isomeric allyl aryl ethers (a) and (Z)-prop-1-enyl aryl ethers (b) in DMSO solution has been carried out. From the variation of the equilibrium constant with temperature the Gibbs energies, enthalpies, and entropies of isomerization at 298.15 K have been evaluated. Because of their low enthalpies, the (Z)-prop-1-enyl aryl ethers are strongly favored at equilibrium, the Gibbs energies of the a→b isomerization ranging from -12 to -23 kJ mol-1. The entropy contribution is negligible in most reactions, but occasionally small positive values less than +10 J K-1 mol-1 of the entropy of isomerization are found. The equilibration studies were also extended to involve two pairs of related isomeric ethers with a Me substituent on C(2) of the olefinic bond. The Me substituent was found to increase the relative thermodynamic stability of the allylic ethers by ca. 3.4 kJ mol-1.
Asymmetric dihydroxylation of aryl allyl ethers
Wang,Zhang,Sharpless
, p. 2267 - 2270 (2007/10/02)
Asymmetric dihydroxylation of substituted aryl allyl ethers is described. Para-substituents are shown to favor high enantioselectivity (89-95%ee), while ortho-groups have a deleterious effect (28-63%ee). Four medicinal agents were prepared: guaifenesin (expectorant), mephenesin (muscle relaxant), chlorphenesin (antifungal) and propanolol (β-blocker).
Preparation of aromatic derivatives
-
, (2008/06/13)
Allyl derivatives of phenols, thiophenols and arylamines are prepared by contacting such aromatic reactant with an allyl lower alkyl carbonate in the presence of a molybdenum, tungsten or Group VIII metal.
