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- Hint: think about carbocation stability of benzylic carbocations vs. simple tertiary carbocations b. НО cat. H,SO4 EtОH НО cat. H2SO4 EtОH A Mechanism: Product of faster reaction: Reason: Il..H. H ÔMe Ph;P LIAIH4 compound a compound b HO. Bombykol C16H300 The above reaction scheme presents one possible synthesis of the compound. Work out the synthesis on a separate sheet of paper, and then draw the structure of compound b. Consider E/Z stereochemistry of alkenes. Do not show stereochemistry in other cases.3) Explain how and why the reaction below results in the observed regiochemistryand/or stereochemistry.
- Be sure to answer all parts. The following reaction leads to the given product through a series of two pericyclic reactions. Draw the resulting intermediate in the sequence and account for the observed stereochemistry. SCH3 SCH3 ces H. SCH SCH draw structure ... H.a. What is the major monobromination product of the following reaction? Disregard stereoisomers. b. What is the anticipated percent yield of the major product (as a percentage of all the monobrominated products)?Determine the mechanism of nucleophilic substitution of each reaction and draw the products, including stereochemistr CH₂CH3 CI Br + CN d. + CH3COOH a. acetone + -OCH3 e. DMF f. b. C. ||||| a ||||| Br H Br CH2CH2CH3 + CH3OH DMSO H CH3 CI Br + OCH₂CH3 + CH3CH₂OH
- A. Provide the final product(s) and the detailed, stepwise mechanism showing all steps and intermediates and using curved arrows to show electron flow. H*, H₂O2. Which reaction in each set would be expected to be faster? Explain by showing key intermediates, transition states, and or orbitals. -OTS a. b. TSO Ph-O or Ph Br or solvolysis in acetic acid Ph g Br Ph-O solvolysis in acetic acid1.a. Give the product(s) of the reaction below. …...... D H₂, Pd/C Show stereochemistry. Give product(s) for this reaction. No mechanism is necessary. 1.b. Are there multiple products in 1.a.? Are there major and minor product(s)? Explain.