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11 Answers
106@pranav. it would be better not to delete thequestions which have been resolved.. No one would be able to understand what d'artagnan has written
1ok i would not do that ....................but [plzz tell in the second one......CH3 gps will realease e so it will reduce the nucleophile attack.......or the concept is opp that it wud stabalize the carbocation ??m not able to understand the concept plzz.??
106that also I am thinking about..
but in Sn rkn rate determining step is attack of nucleophile.. (here SN1) So.... not sure.. maybe pritish can help
1arihant ka question hai ..............its says only wich is faster to Sn reacn .,.......not mentioned sn1 or sn2!!
39Phenyl group is bulky...SN2 ka pata nahi, lekin SN1 ka rate zyaada 2 mein hoga...after Cl leaves the carbocation will be highly stabilised by phenyl group and methyl groups. I don't think SN2 is possible kyunki C ke pichwaade pe phenyl baitha hai :D...remember in SN2 nucleophile attacks axially backside to the leaving group, aur yahan phenyl hai.
12 will be faster
reason:
look at the stability of the intermediate
the stabler the intermediate the more lucrative the offer to react and the faster the response
the extra methyl group lends extra stability to c+ ion via +I effect
note: the explaination is based on reaction via Sn1 mechanism which will be the case here due to steric hinderence