CBMS107 Lecture Notes - Lecture 11: Van Der Waals Strain, Substitution Reaction, Alkyne
3 Aug 2018
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4th april 2018: lecture 17 and 18 - alkane/alkene/alkyne reactions: Inert (unreactive) but can react with oxygen and halogens: reactions of alkanes: Readily burn through a combustion/oxidation reaction to give off carbon dioxide, water and energy. When irradiated (uv light) in the presence of a halogen (cl2 or br2) alkanes undergo a substitution reaction where h atoms are replaced by halogen atoms to produce alkyl halides: naming alkenes: Triple bonds = trienes: cis/trans isomers: Trans isomers = more stable due to reduced steric strain: e/z isomers: (e) higher priority groups are on opposite sides of the bond. (z) higher priority groups are on the same side of the bone: naming alkynes: Longest carbon chain that contains the entire triple bond. Add (cid:494)yne(cid:495) to the end to represent carbon and placing that number directly before the yne. If the triple bond is at equal distances to two ends begin numbering at the end nearer the first branch point (substituent)
