Terminal ones have a pKa of about 25, so a weakly acidic hydrogen can be removed, resulting in an anion useful for synthesizing new ones.
Terminal ones have a pKa of about 25, so a weakly acidic hydrogen can be removed, resulting in an anion useful for synthesizing new ones. Incomplete reduction of them is achieved by using sodium or lithium metal in liquid ammonia or by using Lindlar's catalyst. Hydroboration followed by oxidation results in a ketone or aldehyde, and reaction with acidic potassium permanganate cleaves them into carboxylic acids. Often formed by elimination of a dihalide with a strong base, for 10 points, name this class of organic compounds characterized by the presence of a triple bond.
Terminal ones have a pKa of about 25, so a weakly acidic hydrogen can be removed, resulting in an anion useful for synthesizing new ones.
{alkyne}s