enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Trifluorotoluene - Wikipedia

    en.wikipedia.org/wiki/Trifluorotoluene

    For small-scale laboratory preparations, trifluorotoluene is synthesized by coupling an aromatic halide and trifluoromethyl iodide in the presence of a copper catalyst: [2] PhX + CF 3 I → PhCF 3 (where X = I, Br) Industrial production is done by reacting benzotrichloride with hydrogen fluoride in a pressurized reactor. [3] PhCCl 3 + 3 HF → ...

  3. Trifluoromethylation - Wikipedia

    en.wikipedia.org/wiki/Trifluoromethylation

    The first to investigate trifluoromethyl groups in relationship to biological activity was F. Lehmann in 1927. [5] An early review appeared in 1958. [6] An early synthetic method was developed by Frédéric Swarts in 1892, [7] based on antimony fluoride. In this reaction benzotrichloride was reacted with SbF 3 to form PhCF 2 Cl and PhCF 3.

  4. Trifluoromethyl group - Wikipedia

    en.wikipedia.org/wiki/Trifluoromethyl_group

    Trifluoromethyl group covalently bonded to an R group. The trifluoromethyl group is a functional group that has the formula-CF 3. The naming of is group is derived from the methyl group (which has the formula -CH 3), by replacing each hydrogen atom by a fluorine atom. Some common examples are trifluoromethane H– CF 3, 1,1,1-trifluoroethane H ...

  5. 12 Incredible Reindeer Facts for Christmas - AOL

    www.aol.com/12-incredible-reindeer-facts...

    Reindeer prefer the cold, snowy climates of the northern hemisphere winters. It is difficult for a reindeer to survive outside of the frigid air.

  6. 10,000 Steps Per Day Is A Myth—So How Much Should You Really ...

    www.aol.com/10-000-steps-per-day-120000168.html

    The 10,000 steps per day rule isn’t based in science. Here’s what experts have to say about how much you should actually walk per day for maximum benefits.

  7. 4-Trifluoromethylbenzaldehyde - Wikipedia

    en.wikipedia.org/wiki/4-Trifluoromethylbenzaldehyde

    Two other isomers are also known: 2-trifluoromethylbenzaldehyde and 3-trifluoromethylbenzaldehyde. These compounds are derivatives of benzaldehyde with trifluoromethyl substituents. The CF 3 group enhances the electrophilicity of the formyl group and provides a label for analysis by fluorine-19 nuclear magnetic resonance spectroscopy.

  8. 'Dangerous territory': Trump's unsecured calls with world ...

    www.aol.com/dangerous-territory-trumps-unsecured...

    For U.S. foreign policy analysts, Trump’s calls with Putin and other world leaders after his victory over Vice President Kamala Harris in the Nov. 5 election are cause for alarm.

  9. Fluorobenzene - Wikipedia

    en.wikipedia.org/wiki/Fluorobenzene

    In contrast, the boiling points of PhF and benzene are very similar, differing by only 4 °C. It is considerably more polar than benzene, with a dielectric constant of 5.42 compared to 2.28 for benzene at 298 K. [4] Fluorobenzene is a relatively inert compound reflecting the strength of the C–F bond.