EDG or EWG - Lecture Notes - Edubirdie

University:
York University
Course:
CHEM 2021 | Introductory Organic Chemistry II
Academic year:

2023
Views:

209

Pages:

2
Author:

Niklas

EDG or EWG? Ask yourself: Is the heteroatom DIRECTLY attached to the Benzene ring or NOT? Yes -> EDG No -> EWG Example: HNO3 H2SO4 Cl2 AlCl3 Cl2 FeCl3 HNO2 HCl Multiple Directing Group Effects Stronger Directing Group CH3 | CH3-C-CH3 | CH3 Cl | Cl-C-Cl | Cl OH | OH-C-OH | OH Less Steric Hindered CH3 | Cl-C-CH3 | CH3 Cl | Cl-C-Cl | Cl OH | Cl-C-OH | Cl

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