Write out the reactions for 2-bromopentane undergoing BOTH substitution and elimination with methoxide ion, for 2 reactions total. (Note: please write the most plausible substitution or elimination reaction for each) Write out the arrow - pushing mechanisms for 2- bromopentane undergoing BOTH substitution and elimination with methoxide ion, for 2 mechanisms total. (Note: please write the most plausible substitution or elimination mechanism for each. If more than one substitution or elimination product is formed, draw the mechanism for the likely most abundant product only.)

Q2. What are elimination reactions? Illustrate and describe the E2 reaction mechanism. Compare and contract elimination and substitution reactions with relevant examples.

11.; (a) Similar to alkanes, hydrogen gas can undergo radical bromination according to the reaction below. Propose a chain-reaction mechanism for this reaction, including an initiation step, propagation steps, and two plausible termination steps. The homolytic bond dissociation energy for Br-Br is 46 kcal·mole', for H-Br is 88 kcal'mole and for H-H is 104 kcal'mole'. hv H-H + Br-Br 2 H-Br (b) Calculate the overall AH for the above propagation steps (show all work).

help please answer in text form with proper workings and explanation for each and every part and steps with concept and introduction no AI no copy paste remember answer must be in proper format with all working

Synthesize 3,5-dibromotoluene from benzene and any suitable inorganic and organic reagents. Assume you CANNOT separate ortho and para products and both isomers have to be carried through in the entire synthesis.

Bromination can occur in a 1,4 fashion across conjugated double bonds, as shown here for cyclohexa-1,3-diene. One mechanism that has been proposed involves a five-membered ring, bromonium ion intermediate, as shown below. (a) According to this mechanism, what should the stereochemistry be for the products-namely, all cis, all trans, or a mixture of both? (b) Observations from experiment show that both cis and trans products are formed. Does this support or discredit the proposed mechanism shown here? Br Br2 Cyclohexa-1,3-diene Br :Br: Br: Br:

The following elimination reaction results in a mixture of products. Explain why the major products obtained in larger quantities than the minor products. Use chemical structures as necessary to justify your answer.

Write step-by-step mechanism for the following rearrangement: он H,SO, H,SO, Он ........... .............. **.*......

Consider the reaction scheme shown below. HCI [1] ОН (a) Provide a detailed mechanism for reaction [1].

Heterocyclic compounds plays an important role in our daily life. They are mainly used in pharmaceutical and agrochemical products to name a few. 3. It is required to introduce a halogen group to a five membered ring, thiophene. Discuss the reaction mechanism involved in the reaction by selecting a suitable halogen group and analyze why a particular substituted product obtained after the reaction is predominant over the other possible product(s) with the help of reactions.