- Compound with cinnamon fragrance as well as preparation method and application thereof
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The invention relates to a compound with cinnamon fragrance as well as a preparation method and application thereof. The compound has the following structural formula, wherein the structural formula can be named as 2-decenoic acid-2-(4-methoxy)-phenyl-2-butyl ester. The provided compound has the advantages of obvious cinnamon aroma, rich aroma, lasting aroma and good stability, and enriches the sources of cinnamon aroma. When the essence is prepared in different periods, the compound has consistent cinnamon aroma, so that the required aroma can be accurately mastered.
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Paragraph 0104; 0112-0114; 0126; 0132-0133; 0137-0138; 0141
(2021/04/10)
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- METHOD AND COMPOSITION FOR WATER TREATMENT
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The invention provides a method of microbial control in water comprising adding to the water one or more bromine-based biocide(s) and cis-2-decenoic acid or a salt thereof. Compositions in the form of liquid concentrates comprising bromine-based biocides and cis-2-decenoic acid or a salt thereof are also described.
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Page/Page column 18
(2020/12/11)
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- Enantioselective Synthesis of N?H-Free 1,5-Benzothiazepines
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An enantioselective sulfa-Michael-cyclization reaction was developed for the synthesis of 1,5-benzothiazepines with versatile pharmacological activities. The reaction between 2-aminothiophenol and α,β-unsaturated pyrazoleamides gave direct access to N?H-free 1,5-benzothiazepines in the presence of a chiral N,N′-dioxide/Yb(OTf)3complex. Excellent enantioselectivities (up to 96 % ee) and high yields (up to 99 %) were obtained for a broad range of substrates under mild reaction conditions. This method provided a facile approach to the antidepressant drug (R)-(?)-Thiazesim.
- Wang, Guojin,Tang, Yu,Zhang, Yu,Liu, Xiaohua,Lin, Lili,Feng, Xiaoming
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supporting information
p. 554 - 557
(2017/01/18)
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- Alpha, beta-unsaturated carbonyl compound production method
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The present invention relates to an alpha, beta-unsaturated carbonyl compound production method comprising the following steps: (1) oxidizing reaction of a primary alcohol with 3-20 carbon atoms under the effect of an oxidase for selective oxidation of a terminal alcoholic hydroxyl group into an aldehyde group to obtain an aldehyde group compound; (2) Reformatsky reaction of the aldehyde group compound and a halide under the catalytic effect of a metal to produce a corresponding alpha, beta-unsaturated carbonyl compound, the alpha, beta-unsaturated carbonyl compound production method is low-cost, less in environmental pollution, moreover, by alcohol oxidizing reaction by use of the oxidase, the quantitative and high selectivity corresponding alpha, beta-unsaturated carbonyl compound can be obtained, and the after processing is convenient.
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Paragraph 0059
(2016/11/21)
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- A detailed identification study on high-temperature degradation products of oleic and linoleic acid methyl esters by GC-MS and GC-FTIR
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GC-MS and GC-FTIR were complementarily applied to identify oxidation compounds formed under frying conditions in methyl oleate and linoleate heated at 180 °C. The study was focused on the compounds that originated through hydroperoxide scission that remain attached to the glyceridic backbone in fats and oils and form part of non-volatile molecules. Twenty-one short-chain esterified compounds, consisting of 8 aldehydes, 3 methyl ketones, 4 primary alcohols, 5 alkanes and 1 furan, were identified. In addition, twenty non-esterified volatile compounds, consisting of alcohols, aldehydes and acids, were also identified as major non-esterified components. Furanoid compounds of 18 carbon atoms formed by a different route were also identified in this study. Overall, the composition of the small fraction originated from hydroperoxide scission provides a clear idea of the complexity of the new compounds formed during thermoxidation and frying.
- Berdeaux, Olivier,Fontagné, Stéphanie,Sémon, Etienne,Velasco, Joaquin,Sébédio, Jean Louis,Dobarganes, Carmen
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experimental part
p. 338 - 347
(2012/06/29)
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- INHIBITORS OF YEAST FILAMENTOUS GROWTH AND METHOD OF THEIR MANUFACTURE
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The invention broadly relates to the use of α, β-unsaturated fatty acids to inhibit the filamentous growth of fungi and yeasts and to a method for producing same. In particular the invention relates to the use of optionally substituted C8 to C15 α, β-unsaturated fatty acids or salts, esters or amides thereof for inhibiting or retarding the yeast-to-mycelium transition of organisms having a dimorphic life cycle.
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Page/Page column 12-14
(2008/06/13)
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- Two-carbon homologation of aldehydes via silyl ketene acetals. 2. Study of the stereochemical control in the formation of (E)-alkenoic acids
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The condensation of C,O,O-tris(trimethylsilyl)ketene acetal 1 with aldehydes 2 in the presence of catalytic amounts of mercuric iodide at room temperature affords syn and anti β-trimethylsiloxy α-trimethylsilyl alkanoic acid silyl esters 3 in good yields. These new compounds gave, under acidic or basic conditions, E and (or) Z enoic acids 4. The paths for the formation of these alkenoic acids are discussed.
- Bellassoued,Mouelhi,Lensen
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p. 5054 - 5057
(2007/10/03)
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- Electrochemical selective incorporation of CO2 into terminal alkynes and diynes
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Electrochemical incorporation of CO2 into terminal alkynes and diynes on silver cathodes occurred selectively, to afford monocarboxylic acid derivatives in good yields. The electrolyses were carried out in one-compartment cells fitted with magnesium anodes, under mild conditions.
- Ko?ster, Frank,Dinjus, Erkhardt,Din?ach, Elisabet
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p. 2507 - 2511
(2007/10/03)
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- Monocyclic Rod-Type Liquid Crystals, 2-(2-Alkenoyloxy)-5-alkoxytropones
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In 2-(2-alkenoyloxy)-5-alkoxytropones, showing a monotropic smectic A phase, the introduction of a double bond lowers the melting and clearing points as well as the recrystallization temperatures.
- Mori, Akira,Mori, Ryoji,Takeshita, Hitoshi
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p. 1795 - 1796
(2007/10/02)
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- PALLADIUM MEDIATED SYNTHESIS OF CONJUGATED E or Z ENONES AND UNSYMMETRICAL DIVINYL KETONES. ONE-POT PREPARATION OF ISOEGOMAKETONE
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The palladium (o) catalyzed coupling of acyl halides or anhydrides with alkenyl copper reagents furnishes α,β ethylenic ketones and α,β-α',β' diethylenic ketones in high yield.The substitution pattern of the alkenyl copper reagent, directly obtained by carbocupration of alkynes, is fully retained.Anhydrides of Z-ethylenic acids also retain their Z stereochemistry. β-halogeno-vinyl ketones react under the above conditions to afford α,β-γ,δ dienones.An efficient one-pot synthesis of Z or E isoegomaketone is reported.
- Jabri, N.,Alexakis, A.,Normant, J. F.
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p. 1369 - 1380
(2007/10/02)
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