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Topic: Acetophenone


In the News (Mon 6 Oct 08)

  
  ACETOPHENONE   (Site not responding. Last check: 2007-10-09)
ACETOPHENONE, or PHENYL-METHYL KETONE, C8H8O or C6H5CO.CH3, in chemistry, the simplest representative of the class of mixed aliphatic-aromatic ketones.
When heated with the halogens, acetophenone is substituted in the aliphatic portion of the nucleus; thus bromine gives phenacyl bromide, C6H6CO.CH2Br.
Numerous derivatives of acetophenone have been prepared, one of the most important being orthoaminoacetophenone, NH2.C6H4.CO.CH3, which is obtained by boiling orthoaminophenylpropiolic acid with water.
simplestartpage.com /2301_ACETOPHENONE.HTML   (313 words)

  
 ACETOPHENONE (1-PHENYLETHANONE)
Acetophenone, the simplest aromatic ketone, is a clear liquid or crystals; melting point 19 - 20 C; boiling point 202 C; very slightly soluble in water.
It is used as a polymerization catalyst for the manufacture of olefins.
Its is used in tear gas (especially as the form of chloro acetophenone) and warfare.
www.chemicalland21.com /industrialchem/organic/ACETOPHENONE.htm   (507 words)

  
 Synthesis and resolution of alpha-phenylethylamine
of acetophenone and a few chips of porous porcelain in a 250 ml Claisen flask with fractionating side arm, insert a cork carrying a thermometer extending nearly to the bottom of the flask, and attach a short condenser set for downward distillation to the side arm.
Heat the mixture for 3 hours at 180-185°C and then allow to cool; the acetophenone may be recovered from the distillate by extraction with 20 ml of benzene (1).
of > acetophenone and a few chips of porous > porcelain in a 250 ml Claisen flask with > fractionating side arm, insert a cork > carrying a thermometer extending nearly to > the bottom of the flask, and attach a short > condenser set for downward distillation to > the side arm.
www.rxlist.com /rxboard/prozac.pl?read=940   (2070 words)

  
 Acetophenone
ACETOPHENONE is used in perfumery industry, mostly in fragrance like honeysuckle and jasmine, flavours of almond, cherry and strawberry and in tobacco and vanilla works.
ACETOPHENONE is used as an solvent for cellulose ethers and esters for the production of alcohol soluble resins.
ACETOPHENONE is used as an intermediate in organic synthesis of styrallyl Alcohol and Acetate, C-16 Aldehylde, Chloro Acetophenone (a component of tear gas), pharmaceutical intermediates etc.
www.herdillia.com /htm/acetophenone.htm   (200 words)

  
 Acetophenone (CASRN 98-86-2), IRIS, Environmental Protection Agency
The study was given a low confidence level because although the animals were tested by a relevant route of administration at three levels in a subchronic study and several endpoints were monitored, the sample size was inadequate and the range of doses tested did not define a LOAEL.
In a plate incorporation assay at levels of up to 3000 nmol/plate acetophenone was not mutagenic when tested for reverse mutations in several strains of Salmonella typhimurium both in the presence and absence of rat S-9 hepatic homogenates (Elliger et al., 1984).
Formation of chain breaks and thymine dimers in DNA upon photosensitization at 313 nm with acetophenone, acetone or benzophenone.
www.epa.gov /iris/subst/0321.htm   (1256 words)

  
 Acetophenone [factsheet]
* Acetophenone has been detected in ambient air and drinking water; exposure of the general public may occur through the inhalation of contaminated air or the consumption of contaminated water.
* Acetophenone occurs as a colorless liquid that is slightly soluble in water.
* Acetophenone is used in perfumery as a fragrance ingredient in soaps, detergents, creams, lotions, and perfumes; as a flavoring agent in foods, nonalcoholic beverages, and tobacco; as a specialty solvent for plastics and resins; as a catalyst for the polymerization of olefins; and in organic syntheses as a photosensitizer.
www.lakes-environmental.com /toxic/ACETOPHENONE.HTML   (822 words)

  
 Spectrum Laboratories : Chemical Fact Sheet - Cas # 98862
Acetophenone is released to the environment from a variety of combustion processes and
Acetophenone was detected at a conc 2 ug/l in water from Lake
GROUNDWATER: Acetophenone was qualitatively detected in an aquifer near an organic
www.speclab.com /compound/c98862.htm   (702 words)

  
 Asymmetric Reduction of Acetophenone with (-)-b-chlorodiisopinocampheylborane, and Derivatization with (-)-Menthyl ...
Asymmetric Reduction of Acetophenone with (-)-b-chlorodiisopinocampheylborane, and Derivatization with (-)-Menthyl Chloroformate
Acetophenone, 1, (50 mg, 0.42 mmol) is dissolved in Et mL) and added dropwise via syringe to the magnetically stirred solution.
The closest nonbonding interactions are between the bridging methylene on the left ring and the methyl group (R) or the phenyl group (S) of acetophenone as the transition state is approached.
chemeducator.org /sbibs/s0003004/spapers/34eis897.htm   (4088 words)

  
 [No title]   (Site not responding. Last check: 2007-10-09)
CH3CH2OH ______________________________________________________________________________ *Mp 20.5(**Mp 20(Discussion The reduction of an aldehyde or ketone with sodium borohydride is straightforward and usually affords a high yield of the alcohol.
The reaction between sodium borohydride and acetophenone is exothermic.
Therefore, it is important to add the acetophenone dropwise and to control the reaction temperature with an ice bath.
webpub.alleg.edu /employee/p/ppersich/acetophenone.doc   (592 words)

  
 Peter de Lijser's Home Page at CSU Fullerton   (Site not responding. Last check: 2007-10-09)
A recent study on the influence of substituents on the PET reactions of acetophenone oximes also supports the involvement of iminoxyl radicals as the intermediates in these reactions and is most consistent with the electron transfer-proton transfer sequence.
Photolysis of the oximes in the presence of chloranil results in the formation of the chloranil radical anion, which reacts rapidly with the oxime radical cation to form the semiquinone radical and an iminoxyl radical.
The Hammett studies suggest that steric, polar, and radical effects are important for ortho-substituted acetophenone oximes, polar effects are important for para-substituted oximes, and radical stabilization is more important than polar effects for the meta-substituted substrates.
chemsrvr2.fullerton.edu /pdl/research/research.html   (1345 words)

  
 EFFECT OF SUPERCOLLISIONS ON ENERGY TRANSFER IN MIXTURES OF
DL decay rates of the fast and long components of benzophenone and acetophenone were linearly increasing with vapor pressure over the range of 0.05 – 0.5 Torr for benzophenone and 0.17 – 0.53 Torr for acetophenone and with bath gas pressure over the range of 0 – 8 Torr (fig.
distributions are different for internal energy used; benzophenone and acetophenone at accessible energy have not reached the classical limit, classical simulation is not valid in this case; 2) high frequency modes of benzophenone and acetophenone are "energy poor", while the low frequency modes are "energy rich".
To do this, the temperature dependence of vibrational heat capacities and average vibrational energy of benzophenone and acetophenone were determined preliminarily.
www.photobiology.com /photoiupac2000/zalesskaya   (2747 words)

  
 Acetophenone - toxicity, ecologicial toxicity and regulatory information
Acetophenone - Identification, toxicity, use, water pollution potential, ecological toxicity and regulatory information
There may be other diseases and chemicals that have similar symptoms.
Quickview Toxicity Summary for Acetophenone from U.S. EPA IRIS Database
www.pesticideinfo.org /Detail_Chemical.jsp?Rec_Id=PC34118   (729 words)

  
 New Page 1   (Site not responding. Last check: 2007-10-09)
The syntheses of 4-(phenylthio) acetophenone, 4-(phenylsulfonyl) acetophenone, 4-(benzylthio) acetophenone, and 4-(benzylsulfonyl)acetophenone and their azines will also be presented.
4-(phenylthio) acetophenone and 4-(benzylthio) acetophenone were prepared from the commercially available 4-fluoroacetophenone.
These compounds were oxidized with hydrogen peroxide to prepare 4-(phenylsulfonyl) acetophenone and 4-(benzylsulfonyl)acetophenone, respectively.
cstl.semo.edu /sturesearch/src9PosterAbstracts.htm   (3241 words)

  
 Energy Citations Database (ECD) - Energy and Energy-Related Bibliographic Citations
Energy Citations Database (ECD) Document #6181080 - Kinetics of hydrogenation of acetophenone to methylphenylcarbinol on KGA-43 copper-chromium catalyst
Availability information may be found in the Availability, Publisher, Research Organization, Resource Relation and/or Author (affiliation information) fields and/or via the "Full-text Availability" link.
Kinetics of hydrogenation of acetophenone to methylphenylcarbinol on KGA-43 copper-chromium catalyst
www.osti.gov /energycitations/product.biblio.jsp?osti_id=6181080   (108 words)

  
 Agilent - Search Detail
Obtain your free copy of the current Acrobat Reader from Adobe Systems.
Keywords: Lot-to-Lot Reproducibility, Amphetamines, ZORBAX Rx-C8, Acetophenone, Amphetamine, Desipramine, Ethylmorphine, Imipramine, Mefenamic Acid, Methamphetamine, Morphine, Phenylbutazone, Salicylic Acid
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www.chem.agilent.com /scripts/LiteraturePDF.asp?iWHID=30108   (73 words)

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