Question

15. Indicate those ortho/para director(s) and those meta director(s) - NO2 Br - -C₂Hs - NH2 CoHs nat reagent(s), solvent(s) and chemicals are needed in making a Grignard reagent (C2HsMgBri? Choose from the following list. Water diethyl ether lithium, phenyl bromide, ethyl bromide (MR) iodine, sodium bromide, heat 17. Which one of the following reaction is a nucleophilic aromatic substitution reaction? Which one is an electrophilic aromatic substitution? HNOH,SO 18. Predict the product:

Answer 1

-NO2-meta director can it shows -I and effect) Br o ultho and paredirecton Can it shows - I and th effect) meta dissector (-I and in effect) - Cats - GHS - - ortall and para director (+I effect) -Niely - Githu and pane director Ctm effect) CH₃-CH2-Br diethyl ethir (drey) CH₃-CH tigar mg So the reagent should be - dietky lether (solvent) reagent and chemicals - CH₂ - CH2-Tro, mg dielkyl ether, ethyl bounid) meg) O NO +NH (CH3)2 .. a . This is the nucleophilic - aromatic substitution Peaction - because we know for the aromatic Nucleophilic subnitation reaction an election with drowing group ortho or bare position with respect to leaving group must needed. Hoo - Noz is hare with respect to F. -HNU)/Huy S Nez NER -- This is aromatic electrophilic substitution reaction NO2 NUZ TR- NUZ Here HNO3 and thruya produces Noz ion which is electrophilic) species (product)