A terminal alkyne
The hydroboration/oxidation sequence is complementary to the direct, mercury –catalyzed hydration reaction of a terminal alkyne because different products result. Direct hydration with aqueous acid and mercury sulfate leads to a methyl ketone,whereas hydroboration/ oxidation of the same terminal alkyne leads to an aldehyde.
Problem 8.6 what alkyne would you start with to prepare each of the following compounds by a hydroboration / oxidation reaction
Problem 8.7 how would you prepare the following carbonyl compounds starting from an alkyne (reddish brown=Br)