Mercury(ll)catalyzed hydration converts terminal alkynes to methyl ketones Hydroboration/oxidation converts terminal alkynes to aldehyes H0,H2S04 HgSO4 R一CCH3 A methyl ketone R一C=CH 0 A terminal alkyne 1.BH,TH亚， 2.H202 R一CH2一C-H An aldehydeMercury(II) catalyzed hydration converts terminal alkynes to methyl ketones Hydroboration/oxidation converts terminal alkynes to aldehyes