The Hydroboration of Propargyl Bromide. Simple One-Pot Three-Component Routes to (<i>Z</i>)-1-Bromoalk-1-en-4-ols and to <i>a</i><i>nti</i>-Homoallylic Alcohols
toward either the synthesis of (Z)-1-bromoalk-1-en-4-ols 6 or anti-homoallylic alcohols 8. Two one-pot three-component processes were developed based on a sequence of four reactions; preparation of dialkylborane and hydroboration of propargyl bromide are the first steps. Then, quaternization with TEBABr may be carried out either in the presence of the aldehyde when (Z)-1-bromoalk-1-en-4-ols 6 are requested