Concept:Hydroboration-oxidation adds water to alkenes in an anti-Markovnikov manner, giving the less substituted alcohol.Explanation:But-1-ene is CH3​CH2​CH=CH2​.In hydroboration-oxidation, the boron atom attaches to the less substituted carbon (terminal carbon).After oxidation, the hydroxyl group replaces boron at that same terminal carbon.Thus, the product has the −OH group at C-1.This gives butan-1-ol, CH3​CH2​CH2​CH2​OH.The reaction does not form a carbonyl compound, so butanal and butanone are not formed.
