Chapter 9

Question 1

Alkyne nomenclature

Answer 1

Start closer to Alkene if there is both double and triple bond

Groups Amount of carbons in chain en yne

Question 2

Alkyne Hydration

Answer 2

Form: ->HgSO4,H2O/H2SO4
Product: double shift into double bond and OH following Markovinokov then shift to double bonded O
Relationship: one product

Question 3

Alkyne Hydroboration

Answer 3

Form: ->BH3/H2O2, NaOH
Product: anti markovinokov
if terminal Alkyne replace triple bond with aldehyde group(Double bonded O with hydrogen connected to carbon)
If internal replace with ketone(Double bonded O)
Relationship: No

Question 4

Alkyne reduction

Answer 4

Form: ->H2,Pd/C
Product: eliminate triple bond replace with single bond
Relationship: one product

Question 5

Alkyne reduction with Lindars catalyst and other one

Answer 5

Form:->Na NH3(l)
Lindlars catalys-quinoline 2 cyclohexanes
Product:
NaNH3become double bonded with E (opposite) configuration

Lindlars Become double bonded with Z config

Relationship: one product unless double bond in molecule the that bond can change making Diastereomer

Question 6

Ozoneolysis of alkyne

Answer 6

Form:O3 or KMnO4,H3O+
Product: if terminal replace with Carboxylic acid (CO double bond and OH) and CO2
If internal give two Carboxylic acid on each side of double bond
Relationship: one product

Question 7

Alkyne acidity

Answer 7

More triple bonds means more acidic
Add bottom part of reaction to end of terminal side of Alkyne increases PKa equilibrium favored towards higher PKa/weaker acid