Thank you for reporting, we will resolve it shortly
Q.
Out of
Relative stabilities order is
UPSEEUPSEE 2013Organic Chemistry – Some Basic Principles and Techniques
Solution:
Due to the presence of phenyl group the stabilities of the carbocations 1,2 and 3 are greater than cation 4, (due to resonance). Further the presence of electron-donating groups on phenyl ring increases the stability of carbocation.
Hence, cation 1 and 3 are more stable than cation 2. Moreover - OMe group shows $+M$ effect which is more prominent than +\effect of - Me group. Thus, cation 1 is more stable than cation $3 .$ So, the correct order is, $4<\,2<\,3<\,1$
