Organic Chem (Reactions)

Question 1

What’s necessary for this reaction to occur:
Alkane -> Haloalkane

Answer 1

Halogen
UV light
(substitution reaction)

Question 2

What’s necessary for this reaction to occur: Alkane –> Alkene

Answer 2

Catalytic cracking

Question 3

What’s necessary for this reaction to occur: Alkene –> Alkane

Answer 3

H2 reagent
Ni catalyst
Heat
(+ pressure)
(Addition)

Question 4

What’s necessary for this reaction to occur: Haloalkane –> Alcohol

Answer 4

NaOH (aq)
Reflux (Heat + condensation)
(Substitution)

Question 5

What’s necessary for this reaction to occur:
Haloalkane –> Nitrile

Answer 5

KCN
Ethanol
Reflux (Heat + condensation)
(Substitution)

Question 6

What’s necessary for this reaction to occur:
Haloalkane –> Amine

Answer 6

Conc. NH3
Heat (in a sealed tube)
(Substitution)

Question 7

What’s necessary for this reaction to occur:
Haloalkane –> Alkene

Answer 7

Hot, conc. , KOH
alcoholic solution
(Elimination)

Question 8

What’s necessary for this reaction to occur:
Alkene –> Haloalkane

Answer 8

Hydrogen halide (aq)
room temp.
(Addition)

Question 9

What’s necessary for this reaction to occur:
Alkene –> Alcohol

Answer 9

Steam
High pressure
High temperature
(Substitution)

Question 10

What’s necessary for this reaction to occur:
Alkene –> (Addition) Polymer

Answer 10

Polymerisation

Question 11

What’s necessary for this reaction to occur:
Alcohol –> Aldehyde

Answer 11

Cr2O7 [2-] / K2Cr2O7
H+
distil
alcohol must be primary
(Oxidation)

Question 12

What’s necessary for this reaction to occur:
Alcohol –> Ketone

Answer 12

Cr2O7 [2-] / K2Cr2O7
H+
reflux (Heat + condensation)
alcohol must be secondary
(Oxidation)

Question 13

What’s necessary for this reaction to occur:
Alcohol –> Alkene

Answer 13

Al2O3
Heat
///or///
conc. H2SO4
reflux (Heat + condensation)
(Elimination)

Question 14

What’s necessary for this reaction to occur:
Aldehyde –> Alcohol

Answer 14

NaBH4 – aq, heat
//or//
LiAlH4
(Reduction)

Question 15

What’s necessary for this reaction to occur:
Aldehyde –> Carboxylic acid

Answer 15

Cr2O7 [2-] / K2Cr2O7
H+
reflux (Heat + condensation)
(Oxidation)

Question 16

What’s necessary for this reaction to occur:
Ketone –> Alcohol

Answer 16

NaBH4
Alcoholic or alkaline aq. solution
Heat
///or///
LiAlH4
(Reduction)

Question 17

What’s necessary for this reaction to occur:
Carboxylic acid –> Alcohol

Answer 17

LiAlH4
(Reduction)

Question 18

What’s necessary for this reaction to occur:
Alcohol –> Carboxylic acid

Answer 18

Cr2O7 [2-] / K2Cr2O7
H+
reflux (heat + condensation)
1-primary only
(Oxidation)

Question 19

What’s necessary for this reaction to occur:
Nitrile –> Carboxylic acid

Answer 19

H+ (aq)
reflux (Heat + condensation)
H2O
(Hydrolysis)

Question 20

What’s necessary for this reaction to occur:
Nitrile –> Amine

Answer 20

LiAlH4
(Reduction)