Question

Consider a typical Sy1 pathway involving the reaction of 2-bromo-2-methylpropane with hydroxide as shown below. CH; H,C-C Syl -Br + NaOH CH; A reaction energy diagram for this reaction is provided below. What intermediate from the list below is present at position (2) on this diagram? (3) G (1) (5) Reaction Coordinate

Answer 1

Reaction CH3 CH3 Nuor CH₃-q CH3 CH₃- C-OH SNT CH3 2-methyl-2-propanol SNI reaction proceeds through two step's . In Step -I c- Bor bond get partial brokere CH3 CH₃ st H3C- - Br H3ce C.. s- Br CH₃ CH, Transition steete I In step -I boraks C- Br bend completly to tom carbocation CH3 er3 H3C Bar H3C-c + + Br et carbo catuin

In the C-oh bond pontialy SAP tema's CH3 CH₃ st toh He cota CH₃ 4 Transition state - II In the last step- C-on bend forms completely CH3 st म.८ .....OH CH3 → H3(-6- CH3 etz final product nel Intromedicete tom at 2 position is CH3 By H₃C-ç chz Transition state - I

CH3 5। C-C Br मर CHR H.C H 4- ॐ मः 03 H3c-c-Br CH + Cife Naon 3 CH3 HS cool + NaBr Reaction co-ordinate Jutromedicate a nad position is CH s+ 8 नि H CH3 Proansition state -I