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A: The answer js given as follows
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Q: During free radical bromination, which hydrogen is easily abstracted? H3G CH2Ha CH3 H3C- CH2Hd Ho Hc…
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Q: i. H,C CH3 CH, c-CH CH CH CH H,C CH3 Он Br ii. HO HBr
A: Organic synthesis examples.
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A: SOLUTION: Step 1: CrO3 + pyridine + HCl is known as Collins reagent (pyridinium chlorochromate) and…
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A: Reaction-
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Q: NaOH (cat.) H20 b. MePPh, Br H. KOIBU 1. LIAIH, (xs) 2. H3O+ work-up OMe
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Q: Which term best describes the stereochemical relationship of the products of the reaction shown…
A: The stereochemical relationship of the products of the reaction shown below
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Q: What is the product of the following reaction sequence? You can ignore and stereochemistry. The…
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Q: What alkyl chloride affords the following alkene exclusively under E2 reaction conditions?
A: E2 elimination is a converted reaction .A strong base abstracts the β-proton that is anti or trans…
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A: We can get Given product by doing series of electrophilic aromatic substitution reaction.
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A: Please find the attached work sheet for complete solution.
Q: 1) H3O* 2) NaOEt
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Q: НО H+, OCH3 heat + LOCH3
A: First reaction is Protection of alcohol Second reaction is (4+2) cycloaddition reaction
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A: The major products formed when cyclopentanol reacts with HCl and ZnCl2 are as follows:
Q: Provide the major product(s) for the following reactions. Be sure to indicate stereochemistry when…
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- The compound 3,4-dimethyl-hexan-3-ol of 3R, 4S configuration is treated with a concentrated HBr solution at room temperature. A mixture of two stereoisomers is obtained.If the reaction mixture above is heated, the appearance of several other compounds is observed. 1) Draw the different compounds obtained using the wedge-flywheel representation. 2) What is the majority product? Explain 3) Propose a modification of the experimental conditions in order to obtain the exclusive formation of these compounds obtained after heatingTreatment of -D-glucose with methanol in the presence of an acid catalyst converts it into a mixture of two compounds called methyl glucosides (Section 25.3A). In these representations, the six-membered rings are drawn as planar hexagons. (a) Propose a mechanism for this conversion and account for the fact that only the OH on carbon 1 is transformed into an OCH3 group. (b) Draw the more stable chair conformation for each product. (c) Which of the two products has the chair conformation of greater stability? Explain.Myo-inositol, the most prominent naturally occurring form of inositols, is a carbocyclic polyol that plays an important role as the structural basis for a number of secondary messengers in eukaryotic cells. It is generated in vivo from the aldol cyclization of glucose-6-phosphate to myo-inositol-1-phosphate
- If the reaction of an alcohol with PBr3 follows an SN2 mechanism, what is the stereochemistry of the alkyl bromide formed from (R)-butan-2-ol?When pure (S)-lactic acid is esterified by racemic butan-2-ol, the product is 2-butyl lactate, with the following structure:H+CH3 CH COOH CH3 CH CH3 CH CHOH OHCH2CH3 CH2CH3lactic acidC OOH CH O 3butan-2-ol 2-butyl lactate+(a) Draw three-dimensional structures of the two stereoisomers formed, specifying the configuration at each asymmetriccarbon atom. (Using your models may be helpful.)(b) Determine the relationship between the two stereoisomers you have drawnBenzene is one of the compounds used as octane enhancers in unleaded gasoline. It is manufactured by thecatalytic conversion of acetylene to benzene: 3C2 H2(g) ⇌ C6 H6(g). Which value of Kc would make this reactionmost useful commercially? Kc ≈ 0.01, Kc ≈ 1, or Kc ≈ 10. Explain your answer
- Primary and secondary alcohols can be converted to alkyl chlorides via treatment with thionyl chloride. The reaction proceeds via an SN2 mechanism with inversion of configuration at the chiral carbon.Draw curved arrows to show the movement of electrons in this step of the mechanism.Oxidation of cholesterol converts the alcohol to a ketone. Under acidic or basic oxidationconditions, the C“C double bond migrates to the more stable, conjugated position. BeforeIR and NMR spectroscopy, chemists watched the UV spectrum of the reaction mixture tofollow the oxidation. Describe how the UV spectrum of the conjugated product, cholest-4-en-3-one, differs from that of cholesterolSecondary alcohols are often dehydrated in an E2 reaction to give an alkene. Elimination follows Zaitsev's rule to give the more substituted alkene as the major product. Since the reaction occurs via an E2 mechanism, there is no risk of rearrangement of the carbon skeleton as could possibly occur if the elimination occurred via an E1 mechanism with a carbocation intermediate.Draw curved arrows to show the movement of electrons in this step of the mechanism.
- An acid–base reaction of (R)-sec-butylamine with a racemic mixture of 2-phenylpropanoic acid forms two products having different melting pointsand somewhat different solubilities. Draw the structure of these twoproducts. Assign R and S to any stereogenic centers in the products.How are the two products related? Choose from enantiomers,diastereomers, constitutional isomers, or not isomers of each other.What is the major product obtained from treating an excess of each of the following compounds with Cl2 in the presence of ultraviolet light at roomtemperature? Disregard stereoisomers.(a) When (Z)-3-methylhex-3-ene undergoes hydroboration–oxidation, two isomericproducts are formed. Give their structures, and label each asymmetric carbon atomas (R) or (S). What is the relationship between these isomers?(b) Repeat part (a) for (E)-3-methylhex-3-ene. What is the relationship between the productsformed from (Z)-3-methylhex-3-ene and those formed from (E)-3-methylhex-3-ene?