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- 1. Using a Lewis acid, BF3, (+) aureal (1) undergoes a rearrangement Org. Lett 2012, 14, 4710-4713. Using arrows propose a mechanism for this rearrangement. 2. Explain why we added BF3 as an acid to the alcohol? How does it help with reaction ( 3 --> 4)? 3. What is the process’ name for (4) --> (5)? 4. going from (5) to (6)? 5. from (6) to (2)?Give a reasonable mechanism for each indicated reaction above. Use audiuonal sheets, make sure you draw large enough for your work to be clearly understood, and attach them in order. Then, do the same for letter x, below. 1. Hg(OAc)2, H2O OH х) 2. NABH4, NaOHThis question has multiple parts. Work all the parts to get the most points. a The following compound was synthesized from the reaction of an acetylide ion with a carbonyl compound (i.e. an aldehyde or a ketone), followed by a reduction. OH CH3CH2CH2CCH=CH2 ČH»CH2CH3 Draw the structure of both the aldehyde/ketone and the acetylide ion that were used. • You do not have to consider stereochemistry. • Do not include cationic counter-ions, e.g., Na", in your answer. Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. • Separate structures with + signs from the drop-down menu. Previous
- 1. Prepare the following compounds from any simple alkyl halide having four carbons or less (can be branched, but no other functional groups), ethylene oxide, cyclohexane, and/or cyclopentane. Any other carbon-containing reactants must be synthesized from the above mentioned reagents! Show all steps and reagents. okACHN a) Show the product in the provided small box. b) Draw a detailed step-by-step MECHANISM. In the mechanism show all relevant lone-pairs, charges and mechanistic arrows. Show all structures of formed intermediates, organic or inorganic. NHR OH 1. Dess-Martin-Periodinane (DMP), CH₂Cl2, room temp. 2. NEt3 product (precursor of Oseltamivir)1. Show how to carry out the following transformation. N- ? Show all required reagents and the product after each step. You do not have to use curved arrows. Automatic zero points if any of the following are not adhered to: o All carbon-containing reagents that you use cannot contain more than two carbons each. Benzene-containing reagents are exempt. One of your reagents must be the Wittig reagent!!! You are not allowed to use any reactions we haven't yet covered.
- 4. propose a mechanism for the following reaction (don't go over 18 electrons!). be sure to use curved arrows, state the electron count of each intermediate, and name the reaction at each step.1. Show a detailed mechanism for the following reaction. 1. Cl2, NaOH HO. 2. H3O* 14. For the following, a) predict the product and b) using curved arrows to show electron movement, provide a reasonable mechanism for each reaction. CI CH3OH ??? (-HCI) CI H2N (-HCI) + ??? NH2
- Br OBn Mg, ether a Work through the above synthesis and draw the structure of compound f. then H3O+ • You do not have to consider stereochemistry. • Draw organometallic compounds as covalent molecules. - #[ ] در ? ChemDoodleⓇ CH3l, NaOH H₂, Pd NaOH H₂N. HAY Previous Next f4. Show the detailed mechanism for the following reactions. Label steps (Sn2, protonation..), and use correct arrows (equilibrium, resonance, etc..) a H*/H2O НО b NH,NH, (excess) MEOH HOThe 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.