Which of the following is expected to be most reactive towards a nucleophilic aromatic substitution via the addition-elimination mechanism? LOCH3 LOCH3 A) B) NO2 O2N F LOCH3 C) D) LOCH3 NO2 F NO2

Please provide reasons with each step and arrow pushing mechanism

Which substituent activates a benzene ring the most for electrophilic aromatic substitution? -F {-Me ·올-OMe H

mahesh

Gg.157.

Q9. Rank the following compounds in order of increasing nucleophilicity. 16 I. NH3 II. H₂O III. CI IV. F 4 3 a) I, II, III, IV b) I, II, IV, IIIX c) IV, III, I, IIX d) II, I, III, IV

1. H3C H CH3 2. H3C + Br CH3 H3C H excess NH3 NH4CI H H NH2 C2H5 N-C₂H5 C2H5 + C2H5 H-N-C2H5 Br C2H5 a Proton transfer b Lewis acid/base e Electrophilic addition h = Syl Nucleophilic substitution f El Elimination i = SN2 Nucleophilic substitution c Radical chain substitution g E2 Elimination j Electrophilic aromatic substitution d Radical chain addition Identify the mechanism by which each of the reactions above proceeds from among the mechanisms listed. Use the letters a - j for your answers.

Circle the molecule that will undergo electophilic aromatic substitution at a faster rate

9) Which compound is NOT aromatic 09?? B B D

Chem. q4 b i