Column I (Reactions) | Column II (Characteristics) |
I. | (P) Hofmann elimination, one product |
II. | (Q) \[{{S}_{N}}1\] and \[{{E}_{1}}\] and 6 products |
III. | (R) \[{{E}_{1}}CB,\] carbanion |
IV. | (S) Non-classical carbonium ion, racemate |
A) I - Q II - P III - R IV - S
B) I - P II - S III - Q IV - R
C) I - R II - Q III - P IV - Q
D) I - S II - R III - S IV - P
Correct Answer: A
Solution :
[a] \[I-Q\] |
II - P |
Major product of E2 dehydro-halogenation of RF is the least substituted alkene (i,e., Hofmann elimination), irrespective of base is either bulky (e.g., \[t-Bu{{O}^{\bigcirc -}}\]). Or non bulky (e.g., \[Et{{O}^{\bigcirc -}}\]) |
III - R |
Strong EWG (e.g., \[-N{{O}_{2}}\] or \[-\overset{O}{\mathop{\overset{||}{\mathop{S}}\,}}\,-\] group) and poor leaving group (e.g., \[\overset{\bigcirc -}{\mathop{F}}\,\] or \[Ph{{O}^{\bigcirc -}}\]group) favours \[E1CB\]reaction. |
IV-S |
You need to login to perform this action.
You will be redirected in
3 sec