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- 1. Draw the product of the following electrocyclic reaction. a)5. Each of the following may participate in an elimination reaction, under the proper conditions. (a) Circle the alpha (a) carbon. (b) Circle the beta (B) carbon(s). (c) Draw the alkene product(s) that may form, with the new double bond between the a and B positions. (d) If more than one alkene product is possible, circle the most stable (Zaitsev) product. X tx + 3Question 5. (20 points) Consider the following reaction. + PhLi (2 eq.) then water a) Propose a structure for the final product. b) Give a complete mechanism for the transformation. c) Draw an energy diagram of the transformation and briefly comment on the relative energies of the starting material, final product, and any intermediate(s), and about the rate determining step.
- thanks.What best defines a transition state?a) Consider the reaction of HBr with ethylene and propylene. At roomtemperature the reaction of propylene with HBr is much faster than thereaction with ethylene.Using reaction energy diagrams and your knowledge of carbocationstability explain why this is so. b) Xylene (dimethylbenzene) is a commonly used chemical in the printingindustry and as a cleaning solvent for oily waste. It is also used whenpreparing histological samples to remove waxes from biological samples.Draw the three possible structures for this compound and give the UPACnames for each. Define which structures are ortho, meta, and para.
- 2. Draw the carbocation rearrangements for each of the following carbocations. yeQ6) (True/False) Unlike SN1 reaction, a nature of leaving group is not very important for E1 reaction. (A) Statement is True (B) Statement is False (C) Statement can be true sometimes (D) I have no idea but I will ask my mother4) Draw the complete electron-pushing arrow mechanism for the following reductions. Explain, using resonance contributors, the regiochemistry that results in each case. ỌMe Na, MeOH ? NH3 CHO Na, MeOH ? NH3
- 5. Draw the mechanism that produces the major product for the following reactions. Do not draw minor products. Include resonance structures of the intermediates. Make sure you add all arrows! For both the reagents reacting together and resonance structures. Lone pairs must be shown on atoms that have charges. This includes the nitro group when drawn out. Arrows either start at electrons and end on at atom or start in the middle of a bond and end on the atom. 1) 2) CI NO₂ H₂N-CH3 (one major product) CI-CIPredict the major product for each of the following reactions. 17.42a ? Modify the given copy of the starting material to draw the product of this reaction. Use the eraser tool to remove any unwanted atoms, and use single bond tool to interconvert between double and single bonds. Edit Drawing NBS Heat or lightProcess of Drawing Hydrohalogenation with a Carbocation Rearrangement ?