Results 211 to 220 of about 68,150 (262)
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The synthesis of methyl tetrosides and their methyl ethers
Collection of Czechoslovak Chemical Communications, 1980Methyl 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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2007
[13057-19-7] C2H5IO (MW 171.97) InChI = 1S/C2H5IO/c1-4-2-3/h2H2,1H3 InChIKey = UUSXSNJAQDJKCG-UHFFFAOYSA-N (reactive methoxymethylating agent for phosphorus,1 carbon,2 oxygen,3 and nitrogen4 nucleophiles; iodomethylating agent for aromatic systems5) Alternate Name: iodomethoxymethane. Physical Data: bp 122 °C (dec)
Michael E. Jung +2 more
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[13057-19-7] C2H5IO (MW 171.97) InChI = 1S/C2H5IO/c1-4-2-3/h2H2,1H3 InChIKey = UUSXSNJAQDJKCG-UHFFFAOYSA-N (reactive methoxymethylating agent for phosphorus,1 carbon,2 oxygen,3 and nitrogen4 nucleophiles; iodomethylating agent for aromatic systems5) Alternate Name: iodomethoxymethane. Physical Data: bp 122 °C (dec)
Michael E. Jung +2 more
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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.
Owen J. Catchpole, Wayne Eltringham and
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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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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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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.
Stanley Peat, E. J. Bourne
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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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Synthetic Communications, 2011
AbstractA new and efficient method for the demethylation of aryl as well as hetaryl methyl ethers using a combination of LiCl and TosOH is described.
Ajay Soni +3 more
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AbstractA new and efficient method for the demethylation of aryl as well as hetaryl methyl ethers using a combination of LiCl and TosOH is described.
Ajay Soni +3 more
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2001
[13057-17-5] C2H5BrO (MW 124.96) InChI = 1S/C2H5BrO/c1-4-2-3/h2H2,1H3 InChIKey = JAMFGQBENKSWOF-UHFFFAOYSA-N (alkylating agent; formaldehyde equivalent;1-8 alcohol protecting group9-14) Alternate Name: BMME. Physical Data: bp 87 °C; d 1.531 g cm−3.
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[13057-17-5] C2H5BrO (MW 124.96) InChI = 1S/C2H5BrO/c1-4-2-3/h2H2,1H3 InChIKey = JAMFGQBENKSWOF-UHFFFAOYSA-N (alkylating agent; formaldehyde equivalent;1-8 alcohol protecting group9-14) Alternate Name: BMME. Physical Data: bp 87 °C; d 1.531 g cm−3.
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2005
[3492-44-2] C2H4Br2O (MW 203.86) InChI = 1S/C2H4Br2O/c1-5-2(3)4/h2H,1H3 InChIKey = HDMDJEKUPKOGNK-UHFFFAOYSA-N (brominating reagent, reagent to effect conversions at the anomeric center of carbohydrates) Physical Data: bp 32–33 °C/13 mm Hg.
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[3492-44-2] C2H4Br2O (MW 203.86) InChI = 1S/C2H4Br2O/c1-5-2(3)4/h2H,1H3 InChIKey = HDMDJEKUPKOGNK-UHFFFAOYSA-N (brominating reagent, reagent to effect conversions at the anomeric center of carbohydrates) Physical Data: bp 32–33 °C/13 mm Hg.
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