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Dithiane information


Dithianes

1,2-dithiane (left), 1,3-dithiane and 1,4-dithiane (right)
Names
Other names
Dithiacyclohexanes
Identifiers
CAS Number
  • 1,2-dithiane: 505-20-4
  • 1,3-dithiane: 505-23-7
  • 1,4-dithiane: 505-29-3
3D model (JSmol)
  • 1,2-dithiane: Interactive image
  • 1,3-dithiane: Interactive image
  • 1,4-dithiane: Interactive image
ChemSpider
  • 1,2-dithiane: 120109
  • 1,3-dithiane: 10019
  • 1,4-dithiane: 10020
PubChem CID
  • 1,2-dithiane: 136335
  • 1,3-dithiane: 10451
  • 1,4-dithiane: 10452
InChI
  • 1,2-dithiane: InChI=1S/C4H8S2/c1-2-4-6-5-3-1/h1-4H2
    Key: CXWGKAYMVASWDQ-UHFFFAOYSA-N
  • 1,3-dithiane: InChI=1S/C4H8S2/c1-2-5-4-6-3-1/h1-4H2
    Key: WQADWIOXOXRPLN-UHFFFAOYSA-N
  • 1,4-dithiane: InChI=1S/C4H8S2/c1-2-6-4-3-5-1/h1-4H2
    Key: LOZWAPSEEHRYPG-UHFFFAOYSA-N
SMILES
  • 1,2-dithiane: C1CCSSC1
  • 1,3-dithiane: C1CSCSC1
  • 1,4-dithiane: C1CSCCS1
Properties
Chemical formula
C4H8S2
Molar mass 120.23 g·mol−1
Melting point 32.5 °C (90.5 °F; 305.6 K) other isomers: 54 (1,3), 112.3 (1,4)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

A dithiane is a heterocyclic compound composed of a cyclohexane core structure wherein two methylene bridges (-CH
2
- units) are replaced by sulfur. The three isomeric parent heterocycles are 1,2-dithiane, 1,3-dithiane and 1,4-dithiane. They are all colorless solids.

Dithiane
Dithiane
Dithiane
Space filling models of 1,2-dithiane (left), 1,3-dithiane and 1,4-dithiane (right)

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Dithiane

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isomeric parent heterocycles are 1,2-dithiane, 1,3-dithiane and 1,4-dithiane. They are all colorless solids. 1,2-Dithiane is an organosulfur compound with...

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Umpolung

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is converted into a dithiane or a thioacetal. In synthon terminology the ordinary carbonyl group is an acyl cation and the dithiane is a masked acyl anion...

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Elias James Corey

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The formations of dithianes can be accomplished with a Lewis acid (scheme 7) or directly from carbonyl compounds. The pKa of dithianes is approximately...

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Cyanide poisoning

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chemically. Therefore, a prodrug, sulfanegen sodium (2, 5-dihydroxy-1,4-dithiane-2,5-dicarboxylic acid disodium salt), which hydrolyzes into 2 molecules...

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Cyclobutanone

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Cyclobutanone can also be prepared in a two step procedure by dialkylation of 1,3-dithiane with 1-bromo-3-chloropropane followed by deprotection to the ketone with...

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Thioacetal

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referred to as umpolung. The reaction is commonly performed using the 1,3-dithiane. The lithiated intermediate can be used for various nucleophilic bond-forming...

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Heterocyclic compound

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Thiazine Oxygen / Sulfur Oxathiane Oxathiin Oxygen / oxygen Dioxane Dioxine Sulfur / sulfur Dithiane Dithiin Boron / nitrogen 1,2-Dihydro-1,2-azaborine...

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Pyruvate dehydrogenase complex

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decarboxylation to produce an acyl anion equivalent (see cyanohydrin or aldehyde-dithiane umpolung chemistry, as well as benzoin condensation). This anion attacks...

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Acyl group

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chemists have developed various acyl anion synthetic equivalents, such as dithianes, as surrogates. However, as a partial exception, hindered dialkylformamides...

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Carbanion

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Benzene C6H6 ~49 Propene C3H6 ~44 Toluene C6H5CH3 ~43 Ammonia (N–H) NH3 ~41 Dithiane C4H8S2 ~39 Dimethyl sulfoxide (CH3)2SO 35.1 Diphenylmethane C13H12 32.3...

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Gewald reaction

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Gewald reaction a 3-acetyl-2-aminothiophene is synthesized starting from a dithiane (an adduct of sulfur and acetone if R = CH3 or acetaldehyde if R = H) and...

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Podophyllotoxin

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Schwartz JA (March 1978). "Synthetic studies on lignan lactones: aryl dithiane route to (.+-.)-podorhizol and (.+-.)-isopodophyllotoxone and approaches...

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Sulfoxylic acid

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sulfinate. Hydrogen sulfoxylate reacts with divinyl sulfone to make 1,4-dithiane 1,1,4,4-tetroxide. Perfluorophenyl iodide is reduced to pentafluorobenzene...

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Trithioacetone

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6-hexamethyl-1,2,4-trithiane and 4-mercapto-2,2,4,6,6-pentamethyl-1,3-dithiane. The product can also be obtained by pyrolysis of allyl isopropyl sulfide...

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Organosulfur chemistry

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thiiranes, thiirenes, thietanes, thietes, dithietanes, thiolanes, thianes, dithianes, thiepanes, thiepines, thiazoles, isothiazoles, and thiophenes, among...

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Sulfanegen

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Sulfanegen Names IUPAC name 2,5-Dihydroxy-1,4-dithiane-2,5-dicarboxylic acid Identifiers CAS Number 80003-64-1 (Na+ salt) Y 1309654-46-3 3D model (JSmol)...

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Protecting group

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acetals is easier than of cyclic acetals. Acylals – Removed by Lewis acids. Dithianes – Removed by metal salts or oxidizing agents. The most important protecting...

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Stereoelectronic effect

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a much-amplified difference in the two stereoelectronic effects in 1,3-dithiane (σ(C–H) → σ*(C–S)) than in 1,3-dioxane(σ(C–H) → σ*(C–O)). The differences...

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Acylsilane

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(typically trimethylsilyl chloride, tmsCl). Silylation of 2-lithio-1,3-dithiane, followed by hydrolysis of the dithioacetal group with mercury(II) chloride...

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Aspilia mossambicensis

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males. Substantial amounts of thiarubrines, antifungal and nematocidal dithianes, were found in roots of plants growing throughout chimpanzee habitats...

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Dieter Seebach

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E. J. (1975). "Generation and synthetic applications of 2-lithio-1,3-dithianes". Journal of Organic Chemistry. 40 (2): 231–237. doi:10.1021/jo00890a018...

Word Count : 297

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