Login

Welcome, Guest. Please login or register.

July 19, 2025, 06:44:16 am

Author Topic: Chemistry question on ortho/meta/para addition  (Read 707 times)  Share 

0 Members and 1 Guest are viewing this topic.

Turtle

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 460
  • Respect: +82
Chemistry question on ortho/meta/para addition
« on: March 11, 2014, 12:55:13 pm »
0
I am wondering why there is no reaction for these 2 reactions.
Aren't NO2 and CN both electron withdrawing groups, therefore meta-directing?
Can anybody explain why there is no reaction in both cases. Or have they given me the wrong answer?



VCE 2011: English, Chemistry, PE, Methods, Health & HD, Further

2012-2014: BSc (Melbourne Uni)

2016-2019: Medicine (Melbourne Uni)

lzxnl

  • Victorian
  • ATAR Notes Legend
  • *******
  • Posts: 3432
  • Respect: +215
Re: Chemistry question on ortho/meta/para addition
« Reply #1 on: March 11, 2014, 04:11:40 pm »
0
Nitrobenzene is an electron withdrawing group, yes. That means it can't undergo Friedel-Crafts alkylation. It basically won't react.

Electron withdrawing groups essentially stop that reaction dead.
2012
Mathematical Methods (50) Chinese SL (45~52)

2013
English Language (50) Chemistry (50) Specialist Mathematics (49~54.9) Physics (49) UMEP Physics (96%) ATAR 99.95

2014-2016: University of Melbourne, Bachelor of Science, Diploma in Mathematical Sciences (Applied Maths)

2017-2018: Master of Science (Applied Mathematics)

2019-2024: PhD, MIT (Applied Mathematics)

Accepting students for VCE tutoring in Maths Methods, Specialist Maths and Physics! (and university maths/physics too) PM for more details

pink0829

  • Victorian
  • Trendsetter
  • **
  • Posts: 127
  • Respect: +24
Re: Chemistry question on ortho/meta/para addition
« Reply #2 on: March 11, 2014, 08:37:36 pm »
0
Turtle, are these prepgenie questions? Are they good? I thought the answers came with explanations.

Turtle

  • Victorian
  • Forum Obsessive
  • ***
  • Posts: 460
  • Respect: +82
Re: Chemistry question on ortho/meta/para addition
« Reply #3 on: March 12, 2014, 07:17:19 pm »
0
Thanks for the help lzxnl!!

Hey Pink!! no they are not, they are McGraw Hill questions I think?
I just found them on google  :)
VCE 2011: English, Chemistry, PE, Methods, Health & HD, Further

2012-2014: BSc (Melbourne Uni)

2016-2019: Medicine (Melbourne Uni)