Draw an alkyl bromide with proper stereochemistry that can be used to synthesize the given alkene as the exclusive product via an E2 reaction. H3C. H;C CH3 H H3C
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The question is in the first image, and the second image is something I tried that got marked wrong. Also wrong is if you flip where the H and Br are in that second image (the Br being on top and the H being at the bottom).
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- What alkene is needed to synthesize the following 1,2-diol using the given reagents? Be sure to answer all parts. CH3CH₂CH2 [1] OsO4 followed by NaHSO3 in H₂O: [2] CH3CO3H followed by "OH in H₂O: H OH OH CH₂CH₂CH3 draw structure... draw structure ...Draw the major organic substitution product or products for (2R,3S)-2-bromo-3-methylpentane reacting with the given nucleophile. Clearly drawn the stereochemistry, including a wedged bond, a dashed bond and two in-plane bonds at each stereogenic center. Omit any byproducts. Br CH;CH20 (conc.) H.2. What phosphorus ylide and carbonyl compound are required to make the following alkene?
- Q4. The herbicide oxyfluorfen can be prepared by the reaction between phenol and an aryl fluoride. Propose a curved arrow mechanism for this reaction. 1 F3C. LOCH2CH3 F3C. КОН CI `NO2 CI OH LOCH2CH3 `NO2 OxyfluorfenDraw the structure (including stereochemistry) of an alkyl chloride that forms each alkene as the exclusive E2 elimination product.Given that an E2 reaction proceeds with anti periplanar stereochemistry, draw the products of each elimination. The alkyl halides in (a) and (b) are diastereomers of each other. How are the products of these two reactions related? Recall from Section 3.2A that CgHs- is a phenyl group, a benzene ring bonded to another group. "OCH,CH, b. CgHgC CH Br OCH,CH3 a. Br
- 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..2. What nucleophile could be used to produce each of the following products from 1- bromobutane? Identify the functional group introduced in each product. a. b. H;C CH3 CN H3C SH H3C N3 H3C e. d. CHBe 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.
- What must be done to OH´ to make it a good leaving group? The transition (to the right) is brought about by heating the starting material with a) Mg and anh. Ether b) KOH in alcohol H2O d) H3PO4 OH The alkene which is the most stable is ... a) CH3CH2 b) с) CH3CH2 CH3 CH3 CH3 H H H H CH3 CH3 H d) e) f) They are equal in CH;CH,CH2 c=c CH3 CH;CH2 c=c CH3 H H stability H Hthe reagents are LiAlH4 Et2O / H2O, can you please redo with these reagents? Thank you.Consider the following nucleophilc substitution. LOCH3 Br OCH3 в A a. Identify the reaction conditions A and specify the reaction mechanism for the nucleophilic substitution. Explain your choice. b. Explain why the transformation does not give rise to significant elimination. c. Which product(s) B is formed in the reaction? Please specify the stereochemistry clearly with reference to the reaction mechanism.