CJC Chemistry Department (Teachers’ Copy)
Name:
Class:
10
ORGANIC CHEMISTRY CONCEPT MAPS
2. ALKENES
General Formula: CnH2n
Functional Group: Alkene
Reagent & condition:
(1) Br2 in hexane or CCl4 , r.t., no light
OR
(2) Br2(l), r.t., no light [1]
Electrophilic addition
(1) Excess conc. H2SO4, 170oC
(2) Excess conc. H3PO4, 250oC
(3) Hot Al2O3 catalyst, 300oC
Elimination
(Apply Saytzeff’s Rule)
Reagent & condition:
(1) H2, Ni catalyst, 150oC or heat OR
(2) H2, Pt/Pd catalyst, r.t. [1]
Type of rxn: Reduction_____ [1]
Alcoholic KOH, heat under reflux
(or NaOH in ethanol, heat under reflux)
Elimination
(Apply Saytzeff’s Rule)
cold KMnO4 in dilute NaOH
Type of rxn: (Mild) oxidative
addition [1 for both correct
oxidation]
KMnO4 in dilute H2SO4, heat under reflux
Type of rxn: (Strong) oxidative cleavage
[1]
Br2(aq), r.t.
Electrophilic addition
[1]
HCl(g), r.t.
Electrophilic addition (apply
Markovnikov’s Rule)
[1]
Reagent & condition:
H2O(g), conc. H3PO4 catalyst,
300oC, 70 atm [1]
Type of rxn: Electrophilic
addition (apply
Markovnikov’s Rule) [1]
OR
Step 1: cold conc. H2SO4
Step 2: water, heat
[1]
1