1catalytic hydrogenation
alkyne converted to an alkane by adding H2 in presence of an ordinary catalyst(Pt)
2dissolving metal reduction
alkyne reduced to a trans alkene by using Na and ammonia
3alkyne reduction (poisoned catalyst)
alkyne reduced to a cis alkene by using H2 in the presence of Lindlar's catalyst
4hydrohalogenation
Markovnikov addition of H and a halogen to an alkyne
5Markvonikov hydration
alkynes undergo acid catalyzed hydration
H2SO4 with H2O catalyzed by HgSO4
6hydroboration-oxidation
anti-Markovnikov addition
produces an aldehyde
7Markovnikov hydration of terminal alkyne
yields a ketone
8Anti-Markovnikov hydration of terminal alkyne
yields an aldehyde
9halogenation
excess X2(two equivalents of halogen) yields a tetrahalide
one equivalent of X2 yields anti and syn addition
10ozonolysis of an internal alkyne
produces 2 carboxylic acids
11ozonolysis of a terminal alkyne
yields carboxylic acid and carbon dioxide
12alkylation of terminal alkyne
converted to an alkynide ion with NaNH2