/
AI Flashcards
Save to my account
Sign up
Report Bug
AI Flashcards
Named Organic Reactions
Study
Question
What product forms when benzene diazonium chloride reacts with phenol in the coupling reaction?
Answer
p-Hydroxyazobenzene (an orange dye), formed by coupling at the para position of the phenol molecule.
Question
What is the general equation for Hofmann's bromamide reaction?
Answer
$\ce{RCONH2 + Br2 + 4NaOH ->[\Delta] RNH2 + Na2CO3 + 2NaBr + 2H2O}$
Question
In Hofmann's bromamide reaction, how does the number of carbons in the product amine compare to the starting amide?
Answer
The amine contains one carbon fewer than the amide taken.
Question
What is the product when benzamide undergoes Hofmann's bromamide reaction?
Answer
Aniline ($\ce{C6H5NH2}$)
Question
What does the Wurtz-Fittig reaction involve to produce alkyl arenes?
Answer
A mixture of an alkyl halide and an aryl halide treated with sodium in dry ether.
Question
What is the product of the Wurtz-Fittig reaction between chlorobenzene, ethyl chloride, and sodium in dry ether?
Answer
Ethylbenzene ($\ce{C6H5C2H5}$)
Question
What does the Hell-Volhard-Zelinsky (HVZ) reaction accomplish for carboxylic acids?
Answer
Alpha-halogenation (Cl or Br) at the alpha position of carboxylic acids having an alpha-hydrogen, using X$_2$ and red phosphorus.
Question
How is fluorobenzene prepared in the Balz–Schiemann reaction?
Answer
Convert benzenediazonium salt to benzenediazonium tetrafluoroborate using $\ce{HBF4}$ ($\ce{C6H5N2+BF4^-}$); on heating it decomposes to fluorobenzene with evolution of $\ce{N2}$ and formation of $\ce{BF3}$.