election withdrawing F унир. 41CIF C- 5 R C Fort20. F Smaller & S- Methoxy Function Group •OCH3 (Para) EDG: electron donating or the group direct the recection. More EWG: electron withdrawing (Meta) group H₂504 oppose? OCH3 VS F ↓ activating O=S=0 " +503 when oppose, & more activating direct the reaction CH3 SO 3 H₂SO4 + decrctivating -> OL Y :F: • (halogen) CH3 19 H F H3C. F на боч но, ·S=0 1

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Stereochemistry and Isomerism

Stereochemistry deals with the three-dimensional structure and properties of molecules. It explains the arrangement of atoms and their manipulation within a molecule in a 3D structure. Stereochemistry can be dealt with all types of molecules. Based on the stereochemistry of a molecule, the physical and chemical properties of the molecules vary.