Question

organic chemistry revision problems. stuck on this page.

9. Which of the following compounds are aromatic? For those that are not provide a reason 10. Consider the following alkyl chlorides. Which would you expect to undergo an Syl substitution most readily? Justify your answer 11. Which of the following would you expect to be most acidic? Justify your answer. 12. Which of the following would you expect to be the stronger base? Justify your answer. 13. For each of the following reactions show the reactive electrophile in the EAS reaction and the product Reaction Reactive electrophile Product HNO, H 50. Bt. AlBry H,SO. ACC, AICI

Answer 1

out of given three compound, @ will have most acidic proton as the system becomes aromatic affer loosing proton. other system ① & ② are not aromatic after doosing proton. aromatic Non-aromatic aromatic Non-aromatic compound pair as compound which is available will have easily available lone it is not involved in aromatization. h have nitrogen but the lone pair involved in aromatization anot easily for donation.

- Aromatis GTC electron system Non aromatic Non-conjugated system T D - Anti-Aramatic 4T electron system since origen lone pair Anti-aromatic - 4 TT electron system since ritrogen lone pair involved. involved Aromatic 30 H Anti-aromatic I are electron system - GT electron system. Aromatic - GT electron system compound ② will undergo an sN' substitution most readily as the system becomes aromatic after loosing chloring atom from the molecule the loss of Chlorine atom o is fascilitated by Chlorine atom