Results 261 to 270 of about 1,208,360 (336)

The Methyl Ethers of D-Glucose

1950
Publisher 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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The synthesis of methyl tetrosides and their methyl ethers

Collection of Czechoslovak Chemical Communications, 1980
Methyl α- and β-D-threofuranosides (I and II) and methyl α- and β-D-erythrofuranosides (VII and VIII) were prepared in a modified manner. For the preparation of monomethyl ethers of compounds I and II 1,2-O-isopropylidene-β-D-threofuranose (IV) was prepared as the starting compound.
Jiří Jarý, Miroslav Marek
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Relative Permittivity Measurements of Trifluoromethyl Methyl Ether and Pentafluoroethyl Methyl Ether

Journal of Chemical & Engineering Data, 2007
The 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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Stereocontrolled total synthesis of (±)-totaryl methyl ether and (±)-semperviryl methyl ether

Tetrahedron, 1992
Abstract 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, Bhattachryya Sukanta, Mukherjee Debabrata   +2 more
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Thermodynamic Property Measurements for Trifluoromethyl Methyl Ether and Pentafluoroethyl Methyl Ether

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, Masaya Hasumoto, Takashi Hondo, Yuya Kano, Koichi Watanabe   +4 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

1955
Publisher 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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The Methyl Ethers of Hexuronic Acids

1954
Publisher 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

1951
Publisher 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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Dichloromethyl Methyl Ether

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, Leticia Quintero, Rosa L. Meza-León   +2 more
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