AbstractThe hydration of the dialkylethynylcarbinols, and the reactivity of the acetyldialkylcarbinols so obtained, i.e. hydrogenation to secondary‐tertiary glycols (and the reactions of the glycols) and reductive animation, have been studied. The amino‐alcohols so prepared, which contain a tertiaryhydroxyl and a primary‐ (or secondary‐) amino group, give Schiff bases or oxazolidines with aldehydes and ketones, and 2‐mercapto‐oxazolines with carbon disulphide or thiocarbonyl chloride. They also condense easily with 1‐halogenoanthraquinones (with their