AROMATICITY CHEMISTRY

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  1. 1. a Friedel craft reaction that leads to the addition of alkyl substituent to a benzene ring via alkyl carbonation?
  2. 3. Which 5-memebered heterocyclic compound is most reactive in Electrophilic aromatic substitution reactions?
  3. 4. A chemical specie that forms a chemical bond by donating its pair of electrons.
  4. 9. rule - A formulaic factor that is used to determine if a compound is aromatic
  5. 11. a fully conjugated cyclic system, that is planar and obey huckle’s rule is said to be?
  6. 14. A benzene mono-substituted with NO2 causes a relatively slow reaction of the benzene ring. What substituent group is NO2?
  7. 15. tetrafluoroborate-In the nitration reaction, what is the other reagent that can be used instead of nitric acid and sulphuric acid at very low temperatures?
  8. 18. Acid- Oxidation of alkyl benzene with Potassium permanganate give rise to?
  9. 20. bromide- What catalyst is added to enable a reaction between a benzene ring and molecular bromine?
  10. 23. The reaction between diazonium ion and cuprous salt is called
  11. 24. Which reduction reaction reduces a carbonyl unit to CH2 under acidic conditions?
  12. 25. groups (electron withdrawing groups) dictate their substituents to which position on the benzene ring?
Down
  1. 2. -A Friedel – Craft reaction that causes a straight alkyl side chain to a benzene followed by the loss of (C=O).
  2. 5. a reaction for heterocyclic compound ring construction using nitrile in the presence of azide ion or alkynes as starting material
  3. 6. - A substituent compound or molecule that is at position 2 to the main functional group on an aromatic compound is at what position
  4. 7. Aromatic substitution reaction that works well for both pyridine & quinoline
  5. 8. One of the rules of aromaticity is that aromatic compounds must be what geometry-
  6. 10. A group that increases the rate of a reaction of a benzene ring and directs incoming substituent to ortho or Para position is-
  7. 12. Occurs when two or more 2p orbitals overlap in an acyclic or cyclic system
  8. 13. isomerism Tautomerism is also known as what?
  9. 16. only involves the movement of electrons and never atoms
  10. 17. halides-Compounds that do not react with benzene without a catalyst (Lewis acid catalyst e.g., FeBr3) present.
  11. 19. the effect of influencing the position of different groups on the benzene ring is?
  12. 21. – a reaction for heterocyclic compound ring construction using 1,4 or 1,5- diketone
  13. 22. Benzene is more comfortable to undergo what type of substitution reaction