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Unformatted text preview: "forcing conditions" Br Br Br (+) (+) H Br – HBr Br + Toluene can form three possible ions. Two are better stabilized by resonance than the third (note the tertiary carbocation in A and B , but not C ), and the transition states leading to them will profit energetically from that stabilization. However there are steric problems in B , and the major product is the 1,4-isomer (called para). A C B CH 3 CH 3 CH 3 CH 3 Br Br Br 2 CH 3 CH 3 CH 3 Br Br Br (+) (+) (+) (+) (+) (+) tertiary tertiary...
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This note was uploaded on 03/02/2010 for the course CHEM orgo taught by Professor Jones during the Fall '10 term at NYU.
- Fall '10