M Dinitrobenzene Synthesis Essay - Homework for you

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M Dinitrobenzene Synthesis Essay

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M dinitrobenzene synthesis essay

dinitrobenzene Look at other dictionaries:

dinitrobenzène — ● dinitrobenzène nom masculin Dérivé dinitré du benzène C6H4(NO2)2. (L isomère méta est employé dans l industrie des explosifs et dans celle des colorants.) … Encyclopédie Universelle

dinitrobenzene — [dī nī΄trō ben′zēn΄] n. any of three isomeric compounds, C6H4 (NO2) 2, formed by the reaction of nitric acid and benzene or nitrobenzene: used in dyes, organic synthesis, etc … English World dictionary

dinitrobenzene — noun Etymology: International Scientific Vocabulary Date: 1873 any of three isomeric toxic compounds C6H4(NO2)2 … New Collegiate Dictionary

dinitrobenzene — noun Any of three isomeric aromatic nitro compounds CH(NO) formed by the nitration of benzene; they are used in the manufacture of dyes etc … Wiktionary

dinitrobenzene — di·ni·tro·ben·zene .dī .nī trō ben .zēn, ben n any of three isomeric toxic derivatives C6H4(NO2)2 of benzene * * * di·ni·tro·ben·zene (di ni″tro benґzēn) a poisonous substance, C6H4(NO2)2, whose fumes may cause breathlessness and… … Medical dictionary

dinitrobenzene — di•ni•tro•ben•zene [[t]daɪˌnaɪ trəˈbɛn zin, bɛnˈzin[/t]] n. chem. any of three benzene derivatives with the formula C6H4NO2 • Etymology: 1870–75 … From formal English to slang

dinitrobenzene — /daɪˌnaɪtroʊˈbɛnzin/ (say duy.nuytroh benzeen), / bɛnˈzin/ (say ben zeen) noun one of three isomeric compounds, C6H4(NO2)2, the most important of which is made by nitration of benzene or nitrobenzene and used in the manufacture of azo dyes.

dinitrobenzene — (ˌ)dī|nī.trō+ noun Etymology: International Scientific Vocabulary dinitro + benzene. any of three isomeric toxic crystalline compounds C6H4(NO2)2 formed by nitration of benzene or nitrobenzene; especially. the yellow meta isomer used chiefly as … Useful english dictionary

1,3-dinitrobenzène — Général Nom IUPAC 1,3 dinitrobenzène Synonymes m dinit … Wikipédia en Français

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Aniline and m -dinitrobenzene in NaY — charge transfer complexes absorbed in a zeolitic host
  • C. Kirschhock
  • H. Fuess
  • Fachgebiet für Strukturforschung, Fachbereich Materialwissenschaft, TH Darmstadt, Petersenstr. 20, D-64287 Darmstadt, Germany

Received 21 November 1995. Accepted 10 April 1996. Available online 24 March 1998.

Abstract

The sites of aniline and m -dinitrobenzene simultaneously absorbed by NaY were studied by neutron powder diffraction. Selective deuteration of the molecules allows concise identification of the guests. These are stacked alternating along a threefold axis of spacegroup Fd—m. UV diffuse reflectance spectrometry gives evidence of a charge transfer interaction between aniline and dinitrobenzene. The investigation of a sample containing two molecules of aniline per supercage yielded identical adsorption positions to those obtained in combination with dinitrobenzene.

Keywords
  • Aniline
  • m -Dinitrobenzene
  • Nay
  • Neutron powder diffraction
  • Rietveld refinement
  • UV spectrometry

Copyright © 1997 Published by Elsevier B.V.

Citing articles ( )

1-Fluoro-2, 4-dinitrobenzene

Additional Names: 2,4-Dinitro-1-fluorobenzene; DNFB; FDNB; Sanger's reagent

Molecular Formula: C 6 H 3 FN 2 O 4

Molecular Weight: 186.10

Percent Composition: C 38.72%, H 1.62%, F 10.21%, N 15.05%, O 34.39%

Literature References: Prepn: A. F. Holleman, J. W. Beekman, Rec. Trav. Chim.23, 225 (1904); Cook, Saunders, Biochem. J.41, 558 (1947). Use in peptide analysis: Sanger, Biochem. J.39, 507 (1945); 40, 261 (1946); 45, 563 (1949); Porter, Sanger, ibid.42, 287 (1948). Tumor promoting activity: F. G. Bock et al.,Cancer Res.29, 179 (1969). Mutagenicity study: D. R. Jagannath et al.,Mutat. Res.78, 91 (1980). Review of uses: Reagents for Organic Synthesis, L. F. Fieser, M. Fieser, Eds. (Wiley, New York, 1967) pp 321-322.

Properties: Pale yellow crystals from ether, mp 26°. bp 2.0 137°. Sol in benzene, ether, propylene glycol.

Melting point: mp 26°

Boiling point: bp 2.0 137°

CAUTION: Vesicant. For proper handling see: J. S. Thompson, O. P. Edmunds, Ann. Occup. Hyg.23, 27 (1980).

Use: Reagent for labeling a terminal amino acid group; in modified Wohl degradations of aldoses. As hapten.

M dinitrobenzene synthesis essay

Dinitrobenzene

Dinitrobenzenes are chemical compounds composed of a benzene ring and two nitro group (-NO2 ) substituents. The three possible arrangements of the nitro groups afford three isomers. 1,2-dinitrobenzene, 1,3-dinitrobenzene, and 1,4-dinitrobenzene. Each isomer has the chemical formula C6 H4 N2 O4 and a molar mass of about 168.11 g/mol. 1,3-Dinitrobenzene is the most common isomer and it is used in the manufacture of explosives .

Properties

The dinitrobenzenes are all crystalline solids. The boiling points of the three isomers are relatively close; however, the melting points significantly differ. 1,4-Dinitrobenzene, which has the highest symmetry, has the highest melting point.

Preparation

1,3-Dinitrobenzene is accessible by nitration of nitrobenzene. The reaction proceeds under acid catalysis using sulfuric acid. The directing effect of the nitro group of nitrobenzene leads to 93% of the product resulting from nitration at the meta -position. The ortho - and para -products occur in only 6% and 1%, respectively. [ 8 ]

Reactions References
  1. ^ Record of CAS RN 25154-54-5 in the GESTIS Substance Database of the IFA
  2. ^ ab Record of CAS RN 528-29-0 in the GESTIS Substance Database of the IFA Error in template * unknown parameter name (Template:GESTIS ): 'Datum' .
  3. ^ ab Record of CAS RN 99-65-0 in the GESTIS Substance Database of the IFA Error in template * unknown parameter name (Template:GESTIS ): 'Datum' .
  4. ^ Record of CAS RN 100-25-4 in the GESTIS Substance Database of the IFA Error in template * unknown parameter name (Template:GESTIS ): 'Datum' .
  5. ^ abcd Brockhaus ABC Chemie, VEB F.A. Brockhaus Verlag, Leipzig 1971.
  6. ^ abcd Félix-Rivera, Hilsamar (2011). "Triacetone triperoxide thermogravimetric study of vapor pressure and enthalpy of sublimation in 303–338K temperature range". Thermochimica Acta514 (1-2): 37–43. doi :10.1016/j.tca.2010.11.034.   )
  7. ^Globally Harmonized System of Classification and Labelling of Chemicals (Second revised ed.), New York and Geneva: United Nations, 2007, ISBN  978-92-1-116957-7. ST/SG/AC.10/30/Rev.2   CS1 maint: Extra text (link )
  8. ^ Joachim Buddrus (2003). Grundlagen der organischen Chemie (3 ed.). Berlin: de Gruyter. p. 360. ISBN  3-11-014683-5.  
  9. ^ Hans Beyer and Wolfgang Walter (1981). Lehrbuch der Organischen Chemie (19 ed.). Stuttgart: S. Hirzel Verlag. pp. 536, 542. ISBN  3-7776-0356-2.  

Stereoselective Synthesis of 5-Thio-β-L-Fucopyranosyl Phosphate

Stereoselective Synthesis of 5-Thio-β-L-Fucopyranosyl Phosphate

The fucosyltransferase-catalyzed 5-thiofucosylation reaction suffered from limitations in the β-selective synthesis of GDP-5-thiofucose, a donor substrate. We found that the use of electronegatively-substituted benzoate groups for 5-thiofucose protection improved the β-selectivity in the phosphorylation step. We thus achieved the synthesis of 5-thio-β-L-fucosyl phosphate in 50% yield from 5-thiofucose, using the 3,5-dinitrobenzoyl group.

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  • Dinitrobenzene - definition of dinitrobenzene by The Free Dictionary

    dinitrobenzene

    Any of three isomeric compounds, C6 H4 (NO2 )2. made from a mixture of nitric acid, sulfuric acid, and heated benzene and used in celluloid manufacture, in dyes, and in organic synthesis.

    dinitrobenzene

    (Elements & Compounds) a yellow crystalline compound existing in three isomeric forms, obtained by reaction of benzene with nitric and sulphuric acids. The meta- form is used in the manufacture of dyes and plastics. Formula: C6H4(N02)2

    di•ni•tro•ben•zene

    (daɪˌnaɪ trəˈbɛn zin, -bɛnˈzin)

    any of three benzene derivatives with the formula C6 H4 NO2.

    References in periodicals archive ?

    05) benefit in the Wistar rat model of dinitrobenzene sulfonic acid (DNBS) induced colitis, a preclinical model widely used by the pharmaceutical industry and academia to test agents as potential treatments for UC.

    The cyclopentenone prostaglandin 15-deoxy-delta(12,14)-PGJ2 attenuates the development of colon injury caused by dinitrobenzene sulphonic acid in the rat.

    05) benefit in the Wistar rat model of dinitrobenzene sulfonic acid (DNBS) induced colitis, a preclinical model widely used in industry and academia to test agents as potential treatments for ulcerative colitis.

    Keki - P dinitrobenzene synthesis

    P dinitrobenzene synthesis Dinitrobenzene - Wikipedia, the free encyclopedia

    The directing effect of. Preparation. 1,3-Dinitrobenzene is accessible by nitration of nitrobenzene. P-Dinitrobenzene Benzene, the bank reaction proceeds under acid catalysis using sulfuric internet acid. P-dinitro-E. A novel method for the regioselective synthesis of 4-halo ortho-dinitrobenzene derivatives was freecreditreportacess developed by reacting various meta-halo nitrobenzenes with urea n. Starkey; Published Online. B. Methods - Synthesis Techniques Organic Syntheses Abstract; database tools.

    P dinitrobenzene synthesis

    M-Dinitrobenzene. Min. Order: 0. FOB Price: 0.0 /0.0. Simagchem, your partner in China as a premier supply of bulk specialty chemicals for industry and life science. Synthesis of nitrobenzene 1 for there may be a residue of m-dinitrobenzene or higher pale yellow liquid, B.P. 210 C. (1) Nitrobenzene is appreciably. Find quality suppliers and manufacturers of p-dinitrobenzenefor price inquiry. Where to buy so offer free database is used in organic synthesis. 1-fluoro-2,4-dinitrobenzene, or Sanger s reagent (commonly called dinitrofluorobenzene or dnfb is a chemical used for polypeptide sequencing. Contents 1 Preparation). Organic and Inorganic Practical Chemistry - Prof. Amrut Gaddamwar Prof. P. R. Rajput - Textbook Chapter 1 Organic synthesis 1.1 Preparation of m-Dinitrobenzene. Structure, properties, spectra, suppliers and links for: 1,4-Dinitrobenzene. how to assign letter to external hard drive windows 7

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    1, 3-DINITROBENZENE

    1,3-Dinitrobenzene


    ALS Environmental may or may not test for 1,3-Dinitrobenzene (CAS # 99-65-0). Information is subject to change; please contact us for the latest available analytes for which we test.

    ALS Environmental does not sell chemicals. but offers analytical lab testing to determine the presence of various elements and chemical compounds.

    CAS Number or ID: 99-65-0

    EC Number (EINECS): 99-65-0

    Synonyms: Benzene, m-dinitro-;m-Dinitrobenzene;1,3-Dinitrobenzene;Binitrobenzene;2,4-Dinitrobenzene;Dwunitrobenzen;1,3-Dinitrobenzol;UN 1597

    Use: Synthetic intermediate

    Apearance: orange to yellow crystalline powder

    Melting Point: 88 - 90 C

    Boiling Point: 297 C

    Flash Point: 150 C (closed cup)

    Water Solubility: negligible

    Stability: Stable. Incompatible with reducing agents, oxidizing agents, strong bases. May explode if heated.

    Laboratory tests that may be available by ALS - Columbia for 1,3-Dinitrobenzene (CAS # 99-65-0) :