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- Which structure is NOT aromatic? O H3C B. :Br:For each example, specify whether the two structures are resonance contributors to the same resonance hybrid. H. :0-CH2 а) HO-CH2 CH2-CH2 CH2 CH2 yes no ö: :ö: b) H2C=CH-C-H H2C-CH=ċ-H c) H2C=CH-CH-CH3 H2C-CH=CH-CH3|| :N-H O Nonaromatic. The lone pair on nitrogen occupies an sp3 hybridized orbital thus destroying the continuous system of overlapping p orbitals. Aromatic. A continuous system of overlapping p orbitals contributes to aromaticity. O Antiaromatic. The compound has 4n electrons and the continuous system of overlapping p orbitals is retained.
- Identify the major product for each of the following El reactions: ? он ? EIOH Heat Br conc. H,SO, Нeat (b) OH Br conc. H,SO,, 2 Heat ? EIOH Heat (c) (d)Which of the following pairs represent resonance structures of each other? O- O- O-- :0: H₂C-C-CH3 H₂C=CH-CH₂ H NH₂ 0 :OH H₂C-C=CH₂ NH₂ H3C-CH=CH₂ -H dAdd the remaining atoms to compounds A,B,C PPH3 NaHMDS ,
