0The following table illustrates the directive inflence of various functional groups over benzene for second substitution.
Learn easily through a table.
| VERY STRONG(ACTIVATING) | PHENOXIDE ION O- | ||
| STRONG(ACTIVATING) | NR2 NHR NH2 OH OR | ORTHO-PARADIRECTORS | |
| MODERATELY STRONG (ACTIVATING)
| NHCOR OCOR | ORTHO-PARA DIRECTORS | |
| WEAK (ACTIVATING) | -CH3
-CR3 | WEAK O-P DIRECTORS
ORTHO-META DIRECTOR | |
| WEAK DEACTIVATING | -F -CL,BR,I -CH2CL | O-P DIRECTORS | |
| STRONG DEACTIVATING) | COR COH COOR CONH2 COOH SO3H CN NO2 CF3 | META DIRECTORS |
NOTE(THIS IS MOST IMPORTANT FOR MCQS IN NEET EXAM)
IMPORTANT:
-COOR
-COOH
-CN
-NO2
ARE META DIRECTORS
