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tulipyoursweety
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how can you make an alkyne?
vicinal dihalide + NaNH2 (2 equiv.) → alkyne
Tert butoxide + DMSO (doesn't work as well)

How can you make a vicinal dihalide?
alkene + X_{2}

RCΞCH (HX, 2 equiv.)>
 geminal dihalide (both halides on same C)
 markovnikov's rule

Addition:
how do you make a geminal dihalide?
 alkyne + HX (2 equiv.)
  markovnikov's rule

Addition:
How do you make a tetrahalide?
 RCΞCH (XX, 2 equiv.)>
 bridged halonium ions formed
 anti addition of X_{2} occurs

RCΞCH (XX, 2 equiv.)>
 tetrahalide
 bridged halonium ions formed
 anti addition of X2 occurs

Addition:
How do you make a ketone?
 RCΞCH + A → enol ⇄ ketone
 A = H_{2}O, H_{2}SO_{4 and} HgSO_{4 (not necessary)}
 markovnikov's rule

Addition:
how do you make an aldehyde?
 RCΞCH + A → enol ⇄ aldehyde
 1) BH_{3}, 2) H_{2}O_{2} && HO^{}

