Organic Flashcards
Halogenoarenes do not undergo electrophilic substitution
1) The p orbital of Cl atom overlaps with pi orbital of benzene ring.
2) Delocalization of lone pair of electrons from CL ATOM TO THE P ORBITAL
3) C-cl bond : some DOUBLE BOND character
Halogenoarenes do not undergo electrophilic substitution
1) The p orbital of Cl atom overlaps with pi orbital of benzene ring.
2) Delocalization of lone pair of electrons from CL ATOM TO THE P ORBITAL
3) C-cl bond : some DOUBLE BOND character
R-I with AgNO3 (warm at 50°C)
Yellow ppt forms immediately
Ethanol acidity
The ethoxide Ion is the least stable.
1) The negative charge on O ATOM
2) is intensified
3) by electron donating alky group
4) destabilizing conjugate base
5)POE of acidic dissociation lies to the left
Electron Donating group with Carboxylic Acid
1) The electron donating group intensify negative charge on the O atom
2) Destabalising the conjugate base
3) POE of acid dissociation lies MORE towards the left
4) EDG decrease the acid strength
Electron Withdrawing Group on Carboxylic Acid
Electron Withdrawing group stabalise the Conjugate base by dispersing the negative charge on Oxygen.
POE of acid dissociation lies more towards the right.
EWG increase the acid strength
Dehydration of alchohol
Excess conc H2SO4 at 170
or Al2O3 at 350
Condensation of C. acid and ester
conc H2SO4 Heat Under Reflux for a few hours
Ethanoate ion CH3COO-
1) Ethanoate Ion is the most stable
2) p orbital overlaps with the π orbital of C=O
3) Delocalization of lone pair of electrons on O atom into C=O
4)The negative charge on the oxygen is equally dispersed over 2 electronegative O atom, hence Stabilizing the Conjugate base
The CHARGE DISPERSION of phenoxide ion is less effective than Ethanoate ions as ethanoate ions can better accommodate for the negative charge
5)Poe lies to the right
