SECTION 6 ² REACTIONS AND SYNTHESIS OF ALKENES
6-1 -- Addition of Halogens (X2)
x Stereochemistry (Anti-Addition Observed)
x Bromonium Ion Intermediate
x Nucleophilic Solvent (H2O) vs. Inert Solvent (CCl4)
6-2 -- Halohydrin Formation
x Use of Hypobromous Acid (HO-Br)
x Anti-Addition of ²Br and ²OH
6-3 -- Hydration Reactions
x Conversion of Alkenes to Alcohols
x Markovnikov Regiochemistry
x Acid-Catalyzation of Hydration Reactions
x The Principle of Microscopic Reversibility
6-5 -- Oxymercuration Reaction
x Markovnikov Addition of ²H and -OH
x Use of NaBH4 as a Source of Hydride (:H-)
x No Carbocation Rearrangements Observed
x Hydride Shift
6-6 -- Hydroboration Reaction
x Borane, BH3
x Replacing Borane·s ²H·s with Alkyl Groups (Substitution)
x Mechanism for Hydroboration is ´Concertedµ
x Reaction of BH3 with the Solvent Tetrahydrofuran (THF)
x Steric Effects Control the Regiochemistry of the Observed Products
x Syn-Addition (´Cisµ-like)
6-9 -- Non-Markovnikov Addition of HBr
x Does Not Work with the Reagents HCl or HI
x Free-Radical Chain Mechanism
x Initiation and Propagation Steps of the Mechanism
x 3° Radical vs. 1° Radical Intermediates (Stability)
x Radical Stabilities
x Polymer Production (Teflon, Polystyrene, Polyvinylchloride [PVC], and Plexiglass)
6-11 -- Catalytic Hydrogenation Reaction
x Syn-Addition of H2 Across a Double-Bond
6-11 -- Hydroxylation Reaction
x Conversion of an Alene to a Diol
6-12 -- Oxidative Cleavage Reactions
x The Ozonolysis Reaction
www.OChemNotes.com
x Permanganate Reactions (MnO4-)
6-12 -- Carbene Additions Across a Double Bond
x Their Use in Producing 3-Membered Rings
x How Carbenes are Generated
6-13 -- The Simmons-Smith Reaction
x Carbenoids
x Zn(Cu) = ´Zn-Cuµ Couple
6-14 -- Periodic Acid Cleavage
x Cleavage of Diols to Produce 2 Carbonyl Compounds
www.OChemNotes.com
SECTION 6 – REACTIONS AND SYNTHESIS OF
ALKENES
Were the FREE Section 6 Notes Useful?
Want the FULL VERSION of the Section 6 Notes?
Download Them Instantly for Only $6.99 at:
OChemNotes.com
www.OChemNotes.com