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  2. Electrophilic halogenation - Wikipedia

    en.wikipedia.org/wiki/Electrophilic_halogenation

    Halogenation of benzene where X is the halogen, catalyst represents the catalyst (if needed) and HX represents the protonated base. A few types of aromatic compounds, such as phenol, will react without a catalyst, but for typical benzene derivatives with less reactive substrates, a Lewis acid is required as a catalyst.

  3. Sandmeyer reaction - Wikipedia

    en.wikipedia.org/wiki/Sandmeyer_reaction

    More recently, trifluoromethylation of diazonium salts has been developed and is referred to as a 'Sandmeyer-type' reaction. Diazonium salts also react with boronates, iodide, thiols, water, hypophosphorous acid and others, [6] and fluorination can be carried out using tetrafluoroborate anions (Balz–Schiemann reaction). However, since these ...

  4. Halogenation - Wikipedia

    en.wikipedia.org/wiki/Halogenation

    In chemistry, halogenation is a chemical reaction which introduces one or more halogens into a chemical compound. Halide-containing compounds are pervasive, making this type of transformation important, e.g. in the production of polymers, drugs. [1] This kind of conversion is in fact so common that a comprehensive overview is challenging.

  5. Naturally occurring phenols - Wikipedia

    en.wikipedia.org/wiki/Naturally_occurring_phenols

    Phenol – the simplest of the phenols Chemical structure of salicylic acid, the active metabolite of aspirin Chemical structure of aloe emodin, a diphenol Quercetin, a typical flavonoid, is a polyphenol Tannic acid, a typical polyphenol of indeterminate structure Lignin, is around 25% of the composition of wood This structure is repeated many ...

  6. Several drugs, including fentanyl, found in bottlenose ... - AOL

    www.aol.com/news/several-drugs-including...

    Scientists have detected fentanyl and other drugs in dozens of dolphins from the Gulf of Mexico, which could have large implications on the overall health of the oceans, they say. The research ...

  7. Michigan Court declines to hear appeal of ex-officer charged ...

    www.aol.com/michigan-court-declines-hear-appeal...

    The Michigan Supreme Court declined to hear an appeal Monday from a former police officer who is charged with killing a 26-year-old Black man during a traffic stop. Christopher Schurr was fired ...

  8. Phenols - Wikipedia

    en.wikipedia.org/wiki/Phenols

    In organic chemistry, phenols, sometimes called phenolics, are a class of chemical compounds consisting of one or more hydroxyl groups (−O H) bonded directly to an aromatic hydrocarbon group. [1] The simplest is phenol, C 6 H 5 OH. Phenolic compounds are classified as simple phenols or polyphenols based on the number of phenol units in the ...

  9. Colorado school bus driver dismissed after 40 kids left at ...

    www.aol.com/colorado-school-bus-driver-dismissed...

    A Colorado school bus driver allegedly abandoned 40 elementary school-aged students at the wrong stop on Monday, leaving them frightened in the cold and dark, school officials and students say.

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