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- What steps are needed to prepare phenylacetylene, C6H5C = CH, from each compound: (a) C6H5CH2CHBr2; (b) C6H5CHBrCH3; (c) C6H5CH2CH2OH?Which compounds from 5a-d will react with hydroxide in the fashion shown. Which reaction will be the fastest and slowest? Explain using knowledge of carbonyl chemistry, pka and leaving groups.The synthesis above can be performed with some combination of the reagents listed below. Give the necessary reagents in the correct order. Be sure to consider stereochemistry and regiochemistry.A. NaOHB. mCPBAC. OsO4, tBuOOHD. NaHE. H2, LindlarF. CH3CH2CH2BrG. CH3CH2ClH. NaNH2I. H3O+J. Na, NH3(l)
- The reaction of tert-butyl cyclopentyl ether with trifluoroacetic acid is shown below. Explain what kind of reaction this is (SN1, SN2, E1, E2...) and show the mechanism for this transformation.Friedel–Crafts alkylations can be carried out with carbocations formed from reactions other than the reaction of an alkyl halide with AlCl3. Propose a mechanism for the following reaction:1. SN1 or SN2 2. Include major product and stereochemistry 3. Add detailed reaction mechanisms
- A8 Is there anyone who can provide this pericyclic rxn mechanism?Which of the following reagent best accomplish this transformation below? a. BH3, THF, H2O2 b. NaNH2, NH3 c. H2SO4, H2O, HgSO4 d. H2, LindlarWhen Br2 is added to buta-1,3-diene at -15 °C, the product mixture contains 60% ofproduct A and 40% of product B. When the same reaction takes place at 60 °C, theproduct ratio is 10% A and 90% B.) Propose a mechanism to account for formation of both A and B