In organic chemistry, dihydropyran refers to two heterocyclic compounds with the formula C5H8O: 3,4-Dihydro-2H-pyran 3,6-dihydro-2H-pyran In IUPAC names...
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3,4-Dihydropyran (DHP) is a heterocyclic compound with the formula C5H8O. The six-membered C5O ring has the unsaturation adjacent to oxygen. The isomeric...
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2-Tetrahydropyranyl (THP-) ethers derived from the reaction of alcohols and 3,4-dihydropyran are commonly used as protecting groups in organic synthesis. Furthermore...
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presence of air. 4H-pyran easily disproportionates to the corresponding dihydropyran and the pyrylium ion, which is easily hydrolyzed in aqueous medium. Although...
3 KB (206 words) - 21:57, 18 March 2024
Dihydrokavain (redirect from 4-methoxy-2-phenethyl-2,3-dihydropyran-6-one)
Dihydrokavain is one of the six major kavalactones found in the kava plant. It appears to contribute significantly to the anxiolytic effects of kava, based...
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used as a specialty solvent and synthetic intermediate, e.g. to 3,4-dihydropyran. It is prepared by hydrogenation of furfural. It is a precursor to 1...
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rearrangement, is an organic synthesis in which a furan is converted to a dihydropyran. In the original publication by the Polish chemist Osman Achmatowicz...
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which undergoes ring expansion upon dehydration to give dihydropyran. Dihydropyran reacts with ammonia in a reductive amination under ring opening...
9 KB (838 words) - 04:48, 8 July 2024
formula C5H8O (molar mass: 84.12 g/mol) may refer to: Cyclopentanone 2,3-Dihydropyran trans-2-Methyl-2-butenal 2-Methylbut-3-yn-2-ol 3-Penten-2-one This set...
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hydrolyzed to the diacid. Alternatively hydrolysis, followed by oxidation of dihydropyran gives glutaric acid. It can also be prepared from reacting 1,3-dibromopropane...
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[citation needed] In the Achmatowicz reaction, furans are converted to dihydropyran compounds. Pyrrole can be prepared industrially by treating furan with...
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the formula ROCH=CH2. Important enol ethers include the reagent 3,4-dihydropyran and the monomers methyl vinyl ether and ethyl vinyl ether. Akin to enamines...
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Catechin possesses two benzene rings (called the A and B rings) and a dihydropyran heterocycle (the C ring) with a hydroxyl group on carbon 3. The A ring...
38 KB (3,561 words) - 13:44, 12 October 2024
EtOCH(OR)CH3 This alcohol protection reaction is akin to the behavior of dihydropyran. Ethyl vinyl ether also participates in inverse demand [4+2] cycloaddition...
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Zanamivir (category Dihydropyrans)
Zanamivir is a medication used to treat and prevent influenza caused by influenza A and influenza B viruses. It is a neuraminidase inhibitor and was developed...
19 KB (1,929 words) - 13:03, 22 July 2024
as the Achmatowicz rearrangement, furfuryl alcohol is converted to a dihydropyran. The primary use of furfuryl alcohol is as a monomer for the synthesis...
11 KB (939 words) - 09:38, 28 October 2024
Sodium dehydroacetate (category Dihydropyrans)
Sodium dehydroacetate is a compound with the formula Na(CH3C5HO(O2)(CH3)CO). It is the sodium salt of dehydroacetic acid. It is used as a preservative...
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Phenol can act as an ene component, for example in the reaction with dihydropyran, but high temperatures are required (150–170 °C); nevertheless, strained...
27 KB (3,345 words) - 05:39, 27 October 2024
Friedel-Crafts catalyst: Nafion-H increases reaction rates of protection via dihydropyran or o-trialkylsilation of alcohols, phenol, and carboxylic acids. Nafion...
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name (6S)-5,6-dihydro-6-methyl-2H-pyran-2-one Other names 2-methyl-2,3-dihydropyran-6-one, 2-Hexen-5-olide, 5-hydroxy-2-Hexenoic acid δ-lactone, parasorbic...
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Carbonyl groups, for example, can successfully react with dienes to yield dihydropyran rings, a reaction known as the oxo-Diels–Alder reaction, and imines can...
62 KB (7,092 words) - 16:10, 26 September 2024
heating Diethyl ether organic compound; a common laboratory solvent Dihydropyran a heterocyclic compound; used as a protecting group for alcohols in organic...
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ring which results in the formation of a furan, dihydrofuran, pyran, dihydropyran or methylenedioxy group—whether or not further substituted on the benzene...
53 KB (6,685 words) - 10:12, 23 October 2024
Sharpless conditions with AD-mix-α to yield (R)-diol. Later, a resulting dihydropyran was reacted under Upjohn conditions to yield the resulting sugar, mannose...
17 KB (1,996 words) - 12:22, 28 March 2024
reaction in which a suitable diene reacts with an aldehyde to form a dihydropyran ring. This reaction is of some importance to synthetic organic chemistry...
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Iron(III)-promoted cyclization to form a bicyclic dihydropyran 4. Selective opening of the oxazoline portion of the dihydropyran intermediate 4 with water or timethylsilyl...
29 KB (3,232 words) - 12:16, 21 July 2024
2C-B-BUTTERFLY (category Dihydropyrans)
2C-B-BUTTERFLY (2C-B-MOTH, 2C-B-BFLY) is a conformationally-restricted derivative of the phenethylamine hallucinogen 2C-B, which was discovered in 1999...
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Buddhist scripture Diffie–Hellman problem, a problem in cryptography Dihydropyran, a chemical used in organic synthesis Dihydropyridine, a chemical used...
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heterodiene adds electron-rich alkenes in Diels-Alder reactions to give dihydropyrans, the methyl group undergoes further condensation with benzaldehyde to...
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Massoia lactone (category Dihydropyrans)
Massoia lactone is an alkyl lactone derived from the bark of the Massoia tree (Cryptocaria massoia) which is found in Papua, Indonesia though the compound...
2 KB (214 words) - 13:46, 9 June 2020