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- 4. What are the products obtained from the following elimination reaction? Indicate the major product. CH3 CH3CH,CCH, H2OShow steps and reagents necessary to obtain the following products in reactions. (Ex: process could be addition of bromine, hydrogenation, hydroboration, addition of HOX, elimination reactions, oxymercuration/demurcuration, etc) 4) Br H H. Br 5) H. H H 6) онComplete each reaction scheme below with the starting material required to give the product shown as the only major product following the indicated sequence of reactions. Each individual reaction in the sequence must serve a purpose and must result in a product that is different from the corresponding starting material. 1) i) LIAIH, ii) H30* 2) TSCI, pyridine OTs
- 4. What are the products obtained from the following elimination reaction? Indicate the major product. CH3 CH,CH,CCH, H2O +Heck reactions take place with alkynes as well as alkenes. The following conversion involves an intramolecular Heck reaction followed by an intermolecular Heck. Propose structural formulas for the palladium-containing intermediates involved in this reaction.Show how to synthesize the following product as the major product starting with 2,2-dimethylpropane as the starting material. You may use additional reagents and any number of steps. Be sure to list each step with all reactants/reagents/conditions required. (Do not use hydrogenation reactions). Write the process.
- 2. Provide the mechanism for the reaction illustrated below. Show the relevant intermediate/transition state. Br N2OH7. Provide the synthesis for the following product starting with the provide starting material. More than one step is required. Show the mechanism for each reaction. CI- Cl- Starting Material Product5. Complete the outlined reaction sequence by drawing structures for the major product expected. Yo. Cl2 CI HNO3 FeCl3 H2SO4 FeCla
- 10. Predict the major product or products for the following reactions. Assume reagents are present in excess amounts unless otherwise indicated. Clearly depict any stereochemistry. "No Reaction" is a possible answer. NO2 8. B12 FеBг CI OH o AICI CI 1 eq Br 0 FeBr3 1.2NaOH 100 °C 2. H3O4) Predict the major product for the following reaction and give the complete arrow pushing mechanism to show the formation of the product. od (CH3)3COK (CH3)3COH3. For questions "A"- "C", complete the following reaction schemes (no mechanisms required). Show all reagents used in the order of application. th A) 6 B) ||| Ins HO HO