- A convenient preparation of 1-vinylpyridinium salts
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Alkylation of various substituted pyridines with 1,2-dibromo- or 1,2,3- tribromoalkanes provides a new simple route to the corresponding 1 - vinylpyridinium salts. It was established that a correlation, similar to pyridine's quaternization reaction, exists between the reaction time and the product yield and the electronic nature of the substituents in the pyridine ring. The synthesis of 1,1'-vinylenebis-pyridinium salt that is the representative of the new type of quaternary pyridines is described.
- Eicher-Lorka, Olegas,Kupetis, Gytis K.,Rastenyte, Laimute,Matijoska, Algirdas
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- Discovery and Computational Rationalization of Diminishing Alternation in [n]Dendralenes
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The [n]dendralenes are a family of acyclic hydrocarbons which, by virtue of their ability to rapidly generate structural complexity, have attracted significant recent synthetic attention. [3]Dendralene through [8]dendralene have been previously prepared but no higher member of the family has been reported to date. Here, we describe the first chemical syntheses of the "higher" dendralenes, [9]dendralene through [12]dendralene. We also report a detailed investigation into the spectroscopic properties and chemical reactivity of the complete family of fundamental hydrocarbons, [3]dendralene to [12]dendralene. These studies reveal the first case of diminishing alternation in behavior in a series of related structures. We also report a comprehensive series of computational studies, which trace this dampening oscillatory effect in both spectroscopic measurements and chemical reactivity to conformational preferences.
- Saglam, Mehmet F.,Fallon, Thomas,Paddon-Row, Michael N.,Sherburn, Michael S.
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supporting information
p. 1022 - 1032
(2016/02/05)
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- METHOD FOR MANUFACTURING 1,1,2-TRIBROMOETHANE
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PROBLEM TO BE SOLVED: To provide a method for manufacturing 1,1,2-tribromoethane at low cost and high yield. SOLUTION: There is provided a method for manufacturing 1,1,2-tribromoethane, including a process A of brominating 1,1,2-trihaloethane represented by the formula (1), where X1, X2 and X3 represent a chlorine atom or a bromine atom, however at least one of X1, X2 and X3 is a chlorine atom, to obtain 1,1,2-tribromoethane. COPYRIGHT: (C)2016,JPO&INPIT
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Paragraph 0053
(2016/10/07)
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- METHOD OF PRODUCING ALCOHOLS
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A method of making alcohols involves forming of alcohol esters from liquid alkane halides and a solution of metallic salts of organic acids to produce gaseous alcohol esters for reaction with magnesium or metal hydroxides to form the alcohol and the metal salt of the organic acids. In an improvement method, liquid phase alcohol esters instead of gaseous alcohol esters are produced from liquid alkane halides and a solution of metal salts of organic acids whose alkane esters are less soluble in water than that of the alkane halide and treating of the alcohol ester formed with magnesium or metal hydroxides to form the alcohol and the metal salt of the organic acids.
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Paragraph 0046
(2013/08/28)
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- Synthesis of hydroxylated hydrocarbons
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Ethylene glycol, other diols, triols, and polyols are made in an efficient manner by reacting dibromides with water in the presence of a metal oxide. An integrated process of dibromide formation, alcohol synthesis, metal oxide regeneration, and bromine recycling is also provided.
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Page/Page column 5
(2008/06/13)
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