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Derivatives of succinimide (“suck-SIN-uh-myde”) with these bonds are good sources of free radicals. For 10 points each:
[10h] Name these bonds between a particular element and a particular group. Löffler and Freytag (“FRY-tack”) used the radical formed by homolytic cleavage of these bonds to close the pyrrole (“PIRR-roll”) ring of nicotine.
ANSWER: nitrogen–halogen bonds [or N–X bonds; accept bromine, Br, chlorine, Cl, iodine, or I in place of “halogen”; accept N in place of “nitrogen”; accept N-haloamines, N-bromosuccinimide, N-chlorosuccinimide, or N-iodosuccinimide; prompt on halogen bonds by asking “with what element?”]
[10m] This scientist showed that radicals formed from nitrogen–halogen bonds could be used to create alkaloids. An isocyanate (“iso-CYAN-ate”) is the intermediate during a reaction named for this scientist, which removes one carbon from an amide (“AM-idd”).
ANSWER: August Wilhelm von Hofmann [accept Hofmann elimination or Hofmann–Löffler(–Freytag) reaction]
[10e] Nitrogen–halogen bonds can be formed by mixing bleach with this other cleaner, which will evolve chloramine gas. This volatile compound has an incredibly distinctive smell.
ANSWER: ammonia [or NH3]
<Chemistry>

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2024 ACF Nationals2024-04-21Y1910.0063%26%11%

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BrownMcGill010010
Minnesota AChicago C0000
Columbia AClaremont Colleges100010
Columbia BMichigan001010
Cornell AToronto B010010
HarvardRutgers0000
IllinoisOttawa001010
IndianaFlorida001010
Toronto AKentucky0000
DukeMinnesota B001010
NYUJohns Hopkins001010
North Carolina BBerkeley A001010
NorthwesternStanford10101030
PennMaryland0000
PurdueTruman State0101020
Chicago ASouth Carolina0101020
Yale BVanderbilt001010
North Carolina AVirginia001010
Yale AWUSTL B001010