Results 211 to 220 of about 501,263 (263)
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The Methyl Ethers of D-Glucose
1950Publisher Summary This chapter discusses that methylation will connote the replacement of the primary or secondary alcohol groups of a sugar by methoxyl groups. The derived methyl glycoside does not behave as an ether and the original sugar may be regenerated from it by hydrolysis with aqueous acid.
E J, BOURNE, S, PEAT
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Relative Permittivity Measurements of Trifluoromethyl Methyl Ether and Pentafluoroethyl Methyl Ether
Journal of Chemical & Engineering Data, 2007The relative permittivities (er) of trifluoromethyl methyl ether (HFE 143a) and pentafluoroethyl methyl ether (HFE 245mc) were measured as a function of temperature and pressure: (303 to 383) K and (1.5 to 31.6) MPa for HFE 143a and (313 to 323) K and (1.5 to 28.4) MPa for HFE 245mc.
Wayne Eltringham, Owen J. Catchpole
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Journal of Chemical & Engineering Data, 2003
PVT properties are presented for both the gas-phase and liquid-phase, vapor pressures and saturated-liquid densities for hydrofluoroether (HFE) refrigerants, trifluoromethyl methyl ether (CF3OCH3) and pentafluoroethyl methyl ether (C2F5OCH3), that were obtained with a Burnett apparatus and a vibrating-tube densimeter.
Yohei Kayukawa +4 more
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PVT properties are presented for both the gas-phase and liquid-phase, vapor pressures and saturated-liquid densities for hydrofluoroether (HFE) refrigerants, trifluoromethyl methyl ether (CF3OCH3) and pentafluoroethyl methyl ether (C2F5OCH3), that were obtained with a Burnett apparatus and a vibrating-tube densimeter.
Yohei Kayukawa +4 more
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Stereocontrolled total synthesis of (±)-totaryl methyl ether and (±)-semperviryl methyl ether
Tetrahedron, 1992Abstract Stereocontrolled synthesis in racemic form of the title diterpene ethers is described. Friedel-Crafts acylation of the naphthalene derivative 15 afforded the methyl ketone 16 in high yield. The compounds 5 and 16 were converted into the hydrophenanthrenones 6 and 7 respectively. Reductive methylation of 6 and 7 in anhydrous ammonia furnished
Swati Das +2 more
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(Dimethylamino)methyl Methyl Ether
2001(1; R = Me) [62393-45-7] C4H11NO (MW 89.14) InChI = 1S/C4H11NO/c1-5(2)4-6-3/h4H2,1-3H3 InChIKey = YFTNTMQKPLVKFQ-UHFFFAOYSA-N (2; R = Bu) [56275-84-4] C7H17NO (MW 131.22) InChI = 1S/C7H17NO/c1-4-5-6-9-7-8(2)3/h4-7H2,1-3H3 InChIKey = HPUIQFXZXVKZBN-UHFFFAOYSA-N (precursor for N,N-dimethyl(methylene)ammonium salts;2, 3 useful ...
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The Methyl Ethers of D-Galactose
1955Publisher Summary This chapter presents a set of tables of the physical characteristics of the methyl ethers of D-galactose and their derivatives, replaces those of D. J. Bell, Advances in Carbohydrate Chem.
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Bromophloroglucinols and their methyl ethers
Canadian Journal of Chemistry, 1989All 16 bromination products of phloroglucinol and its methyl ethers, as well as five bromoresorcinols and three of their dimethyl ethers, were synthesized and analyzed by nuclear magnetic resonance spectroscopy. Two or three equivalents of bromine convert phloroglucinol to di- and tribromophloroglucinol, 5-methoxyresorcinol to the tri- and 2,4-dibromo,
E. Kiehlmann, R. W. Lauener
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The Methyl Ethers of Hexuronic Acids
1954Publisher Summary This chapter provides an overview of the methyl ethers of hexuronic acids. Hexuronic acid residues occur in a large number of different polysaccharides. The chapter focuses on the methyl ethers of the naturally occurring D-glucuronic, D-galacturonic, and D-mannuronic acids, and their derivatives.
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The Methyl Ethers of D-Galactose
1951Publisher Summary This chapter discusses methyl ethers of D -galactose. The 2,3,4,6-tetramethyl- D -galactopyranos is obtained by the full methylation of the methyl α- or β- D -galactopyranosides, followed by acid hydrolysis of the products.
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2005
[4885-02-3] C2H4Cl2O (MW 114.96) InChI = 1S/C2H4Cl2O/c1-5-2(3)4/h2H,1H3 InChIKey = GRTGGSXWHGKRSB-UHFFFAOYSA-N (carbon monoxide equivalent in reactions with boranes and borinates; formylating reagent for aromatic compounds and vinylsilanes; formation of α-keto acid chlorides) Alternate Name: dichloromethoxymethane; DCME.
Kevin E. Henegar +2 more
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[4885-02-3] C2H4Cl2O (MW 114.96) InChI = 1S/C2H4Cl2O/c1-5-2(3)4/h2H,1H3 InChIKey = GRTGGSXWHGKRSB-UHFFFAOYSA-N (carbon monoxide equivalent in reactions with boranes and borinates; formylating reagent for aromatic compounds and vinylsilanes; formation of α-keto acid chlorides) Alternate Name: dichloromethoxymethane; DCME.
Kevin E. Henegar +2 more
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