11.39A good way to develop alternative resonance structures for carbocations is to move electron pairstoward sites of positive charge.Only one of the Lewis structures shown is a tertiary carbocation. o-Methylbenzyl cation has tertiarycarbocation character; m-methylbenzyl cation does not.11.40The resonance structures for the cyclopentadienide anions formed by loss of a proton from 1-methyl-1,3-cyclopentadiene and 5-methyl-1,3-cyclopentadiene are equivalent.11.41Cyclooctatetraene is not aromatic. 1,2,3,4-Tetramethylcyclooctatetraene and 1,2,3,8-tetramethyl-cyclooctatetraene are constitutional isomers.Leo A. Paquette at Ohio State University synthesized each of these compounds independently of the
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This note was uploaded on 09/26/2011 for the course CHM 2210 taught by Professor Reynolds during the Fall '01 term at University of Florida.