Benzene rings undergo substitution reactions, but not addition reactions. In the lab activity on the preparation of 1-me

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Benzene rings undergo substitution reactions, but not additionreactions. In the lab activity on the preparation of1-methylcyclohexene, your intent would be to verify the presence ofthe alkene by a syn-addition across an alkene using Br2. Inthe paper, see Scheme 2 on page 982, and in particular, the product(3a) of the nucleophilic substitution reaction. Where in thismolecule would you expect a similar Br2 addition reaction to occur?Be specific, and remember while making your predictionthat benzene rings undergo substitution reactions, but notaddition reactions.

Benzene Rings Undergo Substitution Reactions But Not Addition Reactions In The Lab Activity On The Preparation Of 1 Me 1 (28.66 KiB) Viewed 88 times

OH Lot Lov or MeO 1a carbocation (I) H* elimination K₁ acid MeO 2a nudeophilic substitution K₂ 3a In the absence of PPh3, K₁ K₂, 3a is the major product. In the presence of PPh3, K₁ > K₂, 2a is the major product. Scheme 2. Possible reasons behind the effect of PPh on the AICI, catalyst. 2a Me O OMe