Question

Below is a reaction from an old second exam of this course. This reaction underwent Sn 1. Reflect upon how you would have answered this predict the product question prior to exam II; how would you answer the question differently knowing what you learned from this reading? i.e. where would you find the new substituent, methoxy? **1111ll CHZOH 10 °C "CH3

Answer 1

Please refer the below images they will help you;

сезон - Torg Tott "CH3 This reaction goes by snt mechanism. The mechanism is as folows. о си дои V nCH3 CH3 и Thudride shift what3 배국 Н-д си з In SN there is formation of carbocation takes place @ which reachons undergoes bimolocular mechanism SN2oY E2 mechanism _so, If we compare SN, and SNo. So for SA (E2 pans hydrogen should be there to caory of neacha! SN2 is single step process we can differentiate them on basis of base and solvent It we use strong base then most probably SN2 SN' favoured by polax probic solvent (Alcohol) while SNP favoured, by polar, aprotic solvent (pmso anfetc)

③ we can also differontiate SN, and SN basis of substrato, on If substrate is fortiary then more chances of SN, and if substoate is primary then more chances of $1.2. if we have to form So, Tertiary we opt for SN Alcohols reaction. then CH3 CH3-C- OH ou ca - HEB CH3 CH3-C. CH3 ( 2 CH3 CH3 -Co (3-c-Br म CH2 Bro