Category: 105-21-5

105-21-5, Name is Gamma-heptalactone, belongs to Tetrahydrofurans compound, is a common compound. Recommanded Product: 105-21-5In an article, once mentioned the new application about 105-21-5.

Direct Oxidation of Alkanoic Acids and their Amides to gamma-Lactones by Peroxydisulphate-containing Systems

The reaction of one-electron oxidation of alkanoic acids (I) and their amides (VI) on treatment with Na2S2O8-containing systems has been studied.As a result of the direct one-pot reaction acids (I) and amides (VI) are converted into gamma and delta-lactones, the reaction being regioselective and leading mainly to gamma-lactones in up to 35percent yield.The regioselectivity of the oxidative lactonisation depends greatly on the nature of alkyl substituents.The results obtained are presented in terms of a mechanism suggesting the generation of acyloxyl and amidyl radicals from (I) and (VI), respectively, followed by a rearrangement via a 1,5- or 1,6-H shift into the corresponding 3- and 4-carboxy- or -carboxamido-alkyl ra The latter undergo oxidative cyclisation to produce gamma and delta lactones.The system Na2S2O8-NaCl-NaOH converts carboxamides (VI) into amines with loss of one carbon atom as a result of a Hoffmann type rearrangement.

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Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

An article , which mentions 105-21-5, molecular formula is C7H12O2. The compound – Gamma-heptalactone played an important role in people’s production and life., 105-21-5

Lactonization of Unsaturated Alcohols Catalyzed by Palladium Complexes under Neutral Conditions

Secondary and tertiary allylic alcohols react with carbon monoxide in the presence of catalytic quantities of bis(dibenzylideneacetone)palladium (0) and 1,4-bis(diphenylphosphino)butane affording lactones in 45-92percent isolated yields. alpha,beta-Unsaturated acids are formed by isomerization and carbonylation of primary allylic alcohols. 2-(5H)-Furanones were isolated in yields of 60-80percent when alkynols were employed as substrates for the cyclocarbonylation process.

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

105-21-5, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.105-21-5, Name is Gamma-heptalactone, molecular formula is C7H12O2. In a article£¬once mentioned of 105-21-5

Capillary gas chromatographic properties of three new mono-ester permethylated beta-cyclodextrin derivatives

2I-O-Methoxycarbonylmethyl-2II-VII,3 I-VII,6I-VII-eicosa-O-methyl-cyclodextrin (20Me/P2OCH 2COOMe), 6I-O-methoxycarbonylmethyl-2I-VII, 3I-VII,6II-VII-eicosa-O-methyl-cyclodextrin (20Me/P6OCH2COOMe), 6I-O-methoxycarbonyl-6 I-deoxy-2I-VII,3I-VII,6II-VII- eicosa-O-methyl-cyclodextrin (20Me/P6COOMe) have been evaluated as chiral stationary phases (CSPs) for capillary gas chromatography. General chromatographic properties of the corresponding columns have been investigated in terms of efficiency, polarity and inertness. More than 60 solutes have been used for studying their enantioselectivity by comparison with permethylated beta-cyclodextrin as a reference. Similar enantioseparation ability was established for the four studied CSPs, the 20Me/P2OCH2COOMe exhibiting in most cases a better enantioselectivity than the other selectors.

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Reference£º
Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 105-21-5. In a patent£¬Which mentioned a new discovery about 105-21-5, molcular formula is C7H12O2, introducing its new discovery.

Oral care compositions with improved flavor

Oral care compositions having improved taste, said compositions comprising: a carrier material; from about 0.001 to about 10%, by weight of the composition, of an oral care component selected from metal salts, antimicrobial agents, bad breath reduction agents, bleaching agents, surfactants, or a combination thereof; and from about 0.0001 to about 1%, by weight of the composition, of a TRPA1 agonist selected from vanillin esters; benzoate esters; hydroxybenzoate derivatives; methoxy benzoate derivatives; hydroxybutanedioate derivatives; benzamidobenzoate derivatives; methylpropanoate derivatives; phenyl acetate derivatives; hex-3-enoate derivatives; 2-(furan-2-ylmethylsulfanyl)-3-methylpyrazine; phenylmethoxymethylbenzene; (2R)-2-azaniumyl-3-[(2R)-2-azaniumyl-3-oxido-3-oxopropyl]disulfanylpropanoate; (3E)-2-hydroxy-4,8-dimethylnona-3,7-dienal; (2R)-2-azaniumyl-3-[(2S)-2-azaniumyl-3-oxido-3-oxopropyl]disulfanylpropanoate; (3Z)-3-butylidene-2-benzofuran-1-one; 3-methyl-N-(3-methylbutyl)butan-1-imine; 2-(furan-2-ylmethyldisulfanylmethyl)furan; and combinations thereof. Uses thereof and methods of improving the taste of an oral care composition.

One of the oldest and most widely used commercial enzyme inhibitors is aspirin, 105-21-5, which selectively inhibits one of the enzymes involved in the synthesis of molecules that trigger inflammation. you can also check out more blogs about 105-21-5

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Tetrahydrofuran – Wikipedia,
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.105-21-5,Gamma-heptalactone,as a common compound, the synthetic route is as follows.

gamma-heptalactone was added into an decarboxylation and dimerisation reactor R1, in which the upper layer of the catalyst bed layers was loaded with Amberlyst catalyst (Amberlyst 15WET), and the lower layer of the catalyst bed layers was loaded with the decarboxylation and dimerisation catalyst B produced above, two catalyst layers having a same packing height. Decarboxylation and dimerisation was conducted under conditions of a temperature of 180 degree Celsius and a WHSV of 1.5 h-1, resulting in a conversion of 96%, and a selectivity to C8 olefin of 81%. After separation, the C8 olefin was fed into an aromatization reactor R2 for aromatization under the actions of a temperature of 500 degree Celsius, an aromatization catalyst MCM-22, and a space velocity of 2 h-1, to provide a stream containing a xylene product, with a selectivity to xylene of 94%, and a yield of carbon as xylene of 73.1%. The olefin not reacted completely could be recycled to the dimer reactor for continued reaction. The olefin obtained was further separated to provide light aromatics comprising benzene, toluene and the like, simultaneously providing PX in high-purity. In addition, an additional part was obtained as a heavy component from the column bottom. Hydrogen out of the column top could be used as a raw material for hydrogenating oligomers into gasoline or diesel oil, while the heavy component from the column bottom could be used as a raw material for diesel oil or be combusted to supply heat., 105-21-5

105-21-5 Gamma-heptalactone 7742, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; CHINA PETROLEUM & CHEMICAL CORPORATION; SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC; KONG, Dejin; ZHENG, Junlin; SONG, Qi; QI, Xiaolan; XU, Xuan; JIANG, Xiangdong; YANG, Deqin; (19 pag.)US2018/282256; (2018); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem

With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.105-21-5,Gamma-heptalactone,as a common compound, the synthetic route is as follows.

gamma-heptalactone was added into an decarboxylation and dimerisation reactor R1, in which the upper layer of the catalyst bed layers was loaded with Amberlyst catalyst (Amberlyst 15WET), and the lower layer of the catalyst bed layers was loaded with the decarboxylation and dimerisation catalyst B produced above, two catalyst layers having a same packing height. Decarboxylation and dimerisation was conducted under conditions of a temperature of 180 degree Celsius and a WHSV of 1.5 h-1, resulting in a conversion of 96%, and a selectivity to C8 olefin of 81%. After separation, the C8 olefin was fed into an aromatization reactor R2 for aromatization under the actions of a temperature of 500 degree Celsius, an aromatization catalyst MCM-22, and a space velocity of 2 h-1, to provide a stream containing a xylene product, with a selectivity to xylene of 94%, and a yield of carbon as xylene of 73.1%. The olefin not reacted completely could be recycled to the dimer reactor for continued reaction. The olefin obtained was further separated to provide light aromatics comprising benzene, toluene and the like, simultaneously providing PX in high-purity. In addition, an additional part was obtained as a heavy component from the column bottom. Hydrogen out of the column top could be used as a raw material for hydrogenating oligomers into gasoline or diesel oil, while the heavy component from the column bottom could be used as a raw material for diesel oil or be combusted to supply heat., 105-21-5

105-21-5 Gamma-heptalactone 7742, aTetrahydrofurans compound, is more and more widely used in various fields.

Reference£º
Patent; CHINA PETROLEUM & CHEMICAL CORPORATION; SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY, SINOPEC; KONG, Dejin; ZHENG, Junlin; SONG, Qi; QI, Xiaolan; XU, Xuan; JIANG, Xiangdong; YANG, Deqin; (19 pag.)US2018/282256; (2018); A1;,
Tetrahydrofuran – Wikipedia
Tetrahydrofuran | (CH2)3CH2O – PubChem