Lab 5 EAS. Electrophilic aromatic substitution
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8 Terms
Why does iodine need a stronger oxidizing agent than alcl3?
Iodo is the least reactive halogen
What are 3 true things about halogens?
ortho/ para directors
show on fingerprint region
Election withdrawing groups
What functional groups does salicylamide have?
ortho amide and alcohol
What is the role of sodium hypochloride (NaOCl)?
bleach oxidizes iodide ions into iodine
2I- + OCl- +h20 = I2 cl- 2 OH
What does a pale color indicate?
iodine is present
What does sodium thiosulfate do?
quench step to reduce I2 to I-
Why is HCl added?
to protonate the product and make protonated salicylamide precipitate out of solution
Where is Iodine added?
ortho to OH and meta to amide
