-NH2 & -NO2 attached to aromatic ring | Student Doctor Network
2008年1月26日 · NO2 as we all know is very deactivating because it draws its electrons into oxygens rather than donating them into the benzene ring. NO2 CANNOT undergo Friedel …
Activation of benzene by -{ NH }_{ 2 } group can be reduced by
It activates the benzene ring towards electrophilic aromatic substitution reaction. When aniline is acetylated with acetyl chloride, acetanilide is formed. C H 3 C O N H − group is less activating …
ortho/para and meta deactivators | Student Doctor Network
2006年12月21日 · Both NH2 and NO2 pulls electron density away from the benzene ring, but NH2 is able to stablize the ring for electrophilic aromatic substitution because of resonance …
Which of the following group increases the maximum electron
The electron density in the aromatic ring will increase with the presence of electron donating group as a substituent.In benzene, this will shift the electron density from C − H bond of C H 3 …
Presence of a nitro group in a benzene ring: - Toppr
Nitro group is electron withdrawing group. It withdraws electron from benzene rings towards itself such that the pi electrons of benzene are transferred to the nitro group this deactivate the …
electrion donating/withdrawing groups | Student Doctor Network
2011年3月29日 · 1) Aniline has a -NH2 attached to a benzene ring. NH2 is an electron donating group and therefore is able to donate electrons into the benzene ring and delocalize the …
Electron Withdrawing/Donating groups | Student Doctor Network
2007年4月29日 · NO2 is an amazing electron withdrawing group, along with carbonyls. They are also meta directing and deactivate a benzene ring. On the other hand, NH2 is electron …
polarity | Student Doctor Network
2009年9月15日 · BTW even though a CH3 group does donate electron density a benzene ring, doesnt mean that its more polar than when an H is attached instead. H2O is a whole lot more …
13. In which of the following, the group attached to the benzene …
13. In which of the following, the group attached to the benzene ring shows +R effect? OH NH2 OCH, (4) All of these
The directing power of the displaystyle { -NH }_{ 2 },-{ OCH - Toppr
− N O 2 is a meta directing group, and is an electron withdrawing group, and it deactivates the benzene ring. Therefore the order of activating groups will be: − N H 2 > − O C H 3 > − C 6 H …