Which of the following reagents can be used to convert $1-\mathrm{pentyne}$ into an $\mathrm{aldehyde}$ via hydroboration-oxidation?

Show how you would accomplish the following synthetic conversions.

c. 2-bromo-2,4-dimethylpentane → 2,4-dimethylpentan-3-ol

Show how you would accomplish the following transformations.

(c) 1-methylcycloheptanol → 2-methylcycloheptanol

What is the major product of the reaction of 2-methyl-2-butene with each of the following reagents?

k. BH₃/THF, followed by H₂O₂, HO^- , H₂O

Predict the products you would get when the following alkenes undergo (ii) oxymercuration–reduction [1. Hg(OAc)₂ , H₂O 2. NaBH₄ ].

(b)

Which of the following alcohols can be synthesized selectively by hydroboration-oxidation of an alkene?

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

Which of the following best describes the first step in the hydroboration mechanism when an alkene reacts with $B_{2}H6$ (diborane) in the presence of tetrahydrofuran (THF)?

Indentify the mechanism of reaction and predict the product.