10. Addition Reactions

Starting with ethyne, describe how the following compounds can be synthesized:

a. (3S,4R)-4-bromo-3-hexanol and (3R,4S)-4-bromo-3-hexanol

Which of the following represents an addition reaction?

Which of the following correctly completes the mechanism for the electrophilic addition of $H{2}_{}O$ to an alkene in the presence of acid?

When $1-3-\mathrm{butadiene}$ undergoes an electrophilic addition with $\mathrm{HBr}$ at low temperature, which of the following is the major product?

Which of the following best describes what occurs during an addition reaction in organic chemistry?

Which of the following equations represents an addition reaction?

Which of the following best represents the major product formed when an $\mathrm{aldehyde}$ is treated with ${\mathrm{ethylene}}_{\mathrm{glycol}}$ in the presence of $\mathrm{acid}$?

Which of the following is the correct major product when 1-butene undergoes hydroboration-oxidation (using ${\mathrm{BH}}_3$ followed by $H{2}_O/\mathrm{OH}-$)?

In the addition of one mole of $H_2$ to ethyne ($C_2{H}_2$) in the presence of a metal catalyst, what is the major organic product formed?

Which of the following reaction conditions would result in anti-Markovnikov addition to an alkene?

When the alkene shown below undergoes bromination with ${\mathrm{Br}}_2$ in an inert solvent, what is the major product formed?

When water is added to an $\mathrm{alkyne}$ in the presence of acid and mercuric ion catalyst, which major product is typically formed after keto-enol tautomerism?

Which of the following compounds undergoes the most highly regioselective addition of $HBr$?

Which of the following correctly identifies the major 1,2- and 1,4-addition products formed when ${\mathrm{CH}}_2=\mathrm{CH}-{\mathrm{CH}}_2=\mathrm{CH}\mathrm{CHO}$ reacts with HBr at low temperature?

Which of the following is the major product formed when $1-3-\mathrm{butadiene}$ reacts with $\mathrm{propenal}$ in a Diels-Alder reaction?