Transition-metal-catalyzed addition of heteroatom-hydrogen bonds to alkynes

The addition of hetrogenous-hydrogen bonds across the carbon-carbon triple bond, categorized by transition-metal complexes is reported. It includes different types of bonds as N-H, O-H, S-H, Se-H, and P-H where the nature of the hydrogen atom can be completely different depending on the electronegativity of the heteroatom, its oxidation state and the nature of the organic group R.