Question

Which of the following is NOT a meta director?

A) -CO2H

B) -COCH3

C) -NO2

D) -OH

Answer 1

Meta directos groups are the groups that direct incoming electrophile at benzene ring at meta position Orthol para director groups are the groups that direct incoming electrophile on benzene ring at orthol para position, Kalho Xi anej substituent that direct whether electrophete (positive T c héged species) at ortho, para a meta position. meta para of directly attached atom of x to benzene ring has lone pan of electrins like in on, oxygen (0) has lone pair of elections. It shows .. +Mimisomwil) electron donating effect by resonances negative charge denuity increases at otho and para position, to electrophile (positive charged) attacks at eithol para position. so -Oh is eithol para directing, , Ꮎ oᎷ . OY of directly attached atom of t to benzene sing has no lone pair and is bonded by multiple bond to adjacent atom, ot shows -M (mesomuic) election. Withdrawing effect by resonance, positive charge increases an orthol para in meta has now more e density Electrophile attacks at meta position to meta director groups. - example: -d-on, or "-Cha - N o uis on, no- -c-euta com . &-CH2 &-chz Anmen! -ow in mat mata diretor Answer: director -on is not meta . D) option