Question

1.A What is the major organic product obtained from the following reaction? Circle your selection. Provide a mechanism to support your selection.

Brz hu - Br A Br B BA D N-bromesutehnimide Bri hu Bo Br BP A Br Br x-bromo Sueci mide hu Br

1.B

What is the main characteristic of a radical chain initiation step? What is the main characteristic of a radical chain propagation step?C.What is the main characteristic of a radical chain termination step? Write an example for a radical chain initiation step,a radical chain propagation step, and a radical chain termination step?Draw out the three mechanisms for each

1.C What is the correct order of stability of the following radicals? Provide a one sentence explanation.

1.D What type of reactive intermediate is formed in the reaction of propene with N-bromosuccinimide to give 3-bromo-1-propene?Circle the best response. Draw the reactive intermediate.

1.E What type of reactive intermediate is formed upon irradiation of a solution of toluene(Ph–CH3) and bromine? Circle the best response.Draw the reactive intermediate.

Answer 1

Bora bo Brz ho 2 Br 2H BO Br 87 3 Among this four, the radical ③ is 8 hyperconjugation more stable due to So the major product is + Br

H Br allylic radical stablized by conjugati Bren Br (major) the main charactores NBS Bo زہر ملا u Br 1 En -> (major)

16/ The main characteristic of chain. initiation soup is the homolytic cleavage of bond to formed radical. like Br 2 Br + Br horor The main characteristic of chain propagation step is the product formation and generalicom top radioal While in Chain terminalin step , the radical combined to formed the momente 2 Br initiation example: Por HB & BY HEA Eropagation in Brille H. Br + Bo Bra Termination Bir & for

the 어 A D stability order of carbocation is A <c<B increasing stability explaination. Number of Hyper conjugation Stoucture ore, Stability is more is more. ID f → 3-bromo - T- Propene. ht > (allylic radical N

e rare TIE radical intermediate will forund upon irridation light. -CH₂-H ing 24h I Letto intermediate)