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  2. Substitution reaction - Wikipedia

    en.wikipedia.org/wiki/Substitution_reaction

    Coupling reactions are a class of metal-catalyzed reactions involving an organometallic compound RM and an organic halide R′X that together react to form a compound of the type R-R′ with formation of a new carbon–carbon bond. Examples include the Heck reaction, Ullmann reaction, and Wurtz–Fittig reaction. Many variations exist. [3]

  3. SN2 reaction - Wikipedia

    en.wikipedia.org/wiki/SN2_reaction

    Competition experiment between SN2 and E2. With ethyl bromide, the reaction product is predominantly the substitution product. As steric hindrance around the electrophilic center increases, as with isobutyl bromide, substitution is disfavored and elimination is the predominant reaction. Other factors favoring elimination are the strength of the ...

  4. SpaceX Starship (spacecraft) - Wikipedia

    en.wikipedia.org/wiki/SpaceX_Starship_(spacecraft)

    The fourth flight test of the full Starship configuration launched on June 6, 2024, at 7:50 AM CDT. [118] The goals for the test flight were for the ship to survive peak heating during atmospheric reentry. [119] The ship survived atmospheric reentry and successfully ignited its engines for a controlled splashdown. [120]

  5. Associative substitution - Wikipedia

    en.wikipedia.org/wiki/Associative_substitution

    The terminology is typically applied to organometallic and coordination complexes, but resembles the Sn2 mechanism in organic chemistry. The opposite pathway is dissociative substitution, being analogous to the Sn1 pathway. Intermediate pathways exist between the pure associative and pure dissociative pathways, these are called interchange ...

  6. ‘Squid Game’ Season 2 Hits 126.2 Million Views in 11 Days ...

    www.aol.com/squid-game-season-2-hits-200022107.html

    Season 2 of “Squid Game” is racking up views at a record pace. After topping Netflix’s charts last week with 68 million views in four days — Netflix’s biggest TV debut ever — the ...

  7. Meta is ending its fact-checking program in favor of a ... - AOL

    www.aol.com/news/meta-ending-fact-checking...

    Under the system, Meta noted, fact-checkers did not have the ability to remove content, and content would be removed if it violated the company’s community standards, which was discerned by Meta ...

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