10- For the following scheme, if the center compound alkene as shown, Give one actual example for the conversion of this alkene to these shown compounds: Alcohol, alkane, diol, dihalides, etc. Show the condition, of temperature, pressure, and the catalysts needed (if any) for each reaction. OH Halohydrin ** 1,2-Dihalide Halide H OH Alcohol Alkene Alkane Epoxide HO он 1,2-Diol C=O Carbonyl compound Cyclopropane

10- For the following scheme, if the center compound alkene as shown, Give one actual example for the conversion of this alkene to these shown compounds: Alcohol, alkane, diol, dihalides, etc. Show the condition, of temperature, pressure, and the catalysts needed (if any) for each reaction. OH Halohydrin ** 1,2-Dihalide Halide H OH Alcohol Alkene Alkane Epoxide HO он 1,2-Diol C=O Carbonyl compound Cyclopropane

Organic Chemistry

8th Edition

ISBN:9781305580350

Author:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Publisher:William H. Brown, Brent L. Iverson, Eric Anslyn, Christopher S. Foote

Chapter9: Nucleophilic Substitution And Β-elimination

Section: Chapter Questions

Problem 9.39P: Following are diastereomers (A) and (B) of 3-bromo-3,4-dimethylhexane. On treatment with sodium...

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A chemist allows some pure (2S,3R)-3-bromo-2,3-diphenylpentane to react with a solution of sodium ethoxide(NaOCH2CH3) in ethanol. The products are two alkenes: A (cis-trans mixture) and B, a single pure isomer. Under thesame conditions, the reaction of (2S,3S)-3-bromo-2,3-diphenylpentane gives two alkenes, A (cis-trans mixture) and C.Upon catalytic hydrogenation, all three of these alkenes (A, B, and C) give 2,3-diphenylpentane. Determine the structuresof A, B, and C; give equations for their formation; and explain the stereospecificity of these reactions
is steric hinderance not an issue here? why when reacting with KOC(CH3)3 does it yield 2-isopropyl-1-pentene and it yields 2,3-dimethyl-2hexene here?
Q3. For the following reactions, predict the products, mechanism and name all the products obtained Catalytic hydrogenation of cycloalkenes. Reduction of cyclohexanone with Zinc amalgam (Zn/Hg alloy) in concentrated hydrochloric acid Addition of CH2I2 in an alkene in the presence of Zn-Cu 2-hexene + chlorine gas Halogenation of cyclohexane in the presence of light and catalyst Sulfonation of Cyclobutane with oleum Addition of HBr to methylcyclopropane
20- Show and write the correct reactions of the addition of 2 moles of HBr to 1-Hexyne.21- Tautomerization is a process in which an enol yields a ketone Give one examplefor a keto to enol tautomerization. Which form is more stable. Also, which ismore stable the E isomer or the Z isomer of 2-Chloro, 2-Butene?
Does the data provide evidence for the claim that the reaction of Br2 with alkenes proceeds via anti‐addition? The mleting point of the product was found to be 234.5-235.5C chemical reaction: trans-stilbene+pyrimindine tribromide --->acetic acid 1,2-di bromo-1,2-diphenylethane product was trans-1,2-dibromo-1,2-diphenylethane
4- Write the complete mechanism of Li/NH3 Reduction of an Alkyne. Show thedirections of the electron flow with the proper arrow orientations. Name the finalProduct.5- What is order of acidity of the following starting from the least acidic to the mostacidic? Alkanes, Alkenes, Alkynes, Aldehydes, Alcohol, Aldehydes, Carboxylic acids.
When 3-methyl-1-butene is reacted with 9-borabicyclo[3.3.1]nonane, the "1-ol" product is formed. What is the detailed reactin scheme for the transformation? Describe the purification procedure.
What reaction scheme would have - and electrophillic addition - the use of NaBH4 or LiAlH4 - a reaction that generates a new stereocentre - 2-methylbutan-1-ol
Following are diastereomers (A) and (B) of 3-bromo-3,4-dimethylhexane. On treatment with sodium ethoxide in ethanol, each gives 3,4-dimethyl-3-hexene as the major product. One diastereomer gives the E alkene, and the other gives the Z alkene. Which diastereomer gives which alkene? Account for the stereoselectivity of each -elimination.
4. Write the complete mechanism of Li/NH3 Reduction of an Alkyne. Show the directions of the electron flow with the proper arrow orientations. Name the final Product. 5- What is order of acidity of the following starting from the least acidic to the most acidic? Alkanes, Alkenes, Alkynes, Aldehydes, Alcohol, Aldehydes, Carboxylic acids. 6- Prepare cis-2-butane using propyne, and alkyl halide. Use any other reagents needed. 7- Use 4-Octene as the only source of carbon in the synthesis of Butanal. Use any inorganic compounds necessary. 8- Draw the structures of: 1-Iodobutane, 2-Iodobutane, 1-Chlorobutane, 2-Bromobutane, and 3-Flouropentane.
5- In the Wittig reaction, the lide reacts with an aldehyde to form an alkene. Which of the following best describes the stereochemical outcome of a Wittig reaction when using a stabilized ylide?Produces exclusively E-alkenes.• Produces exclusively Z-alkenes.Produces a mix of Z- and E-alkenes, with Z being the major product.Produces a 50:50 mixture of Z- and E-alkenes) Produces a mix of Z- and E-alkenes, with E being the major product. 4- For the synthesis of ethyl 4-chlorocinnamate via the Wittig reaction, which of the following statements is true regarding the mechanism?O The ylide donates a proton to the aldehyde, directly forming the alkene withoutany intermediates.The ylide forms a stable complex with the aldehyde, which is then reduced toform the alkene.The reaction proceeds through a direct displacement mechanism, where the ylide replaces the aldehyde's oxygen.© The phosphonium ylide attacks the carbonyl carbon, forming a betaine intermediate that undergoes rearrangement to…
9- Give one example for the hydration of Alkene: That is the Addition of H2O by oxymercuration. Give the proper Mechanism if possible. 10- Give one example for the hydration of Alkenes: that is: the addition of H2O by Hydroboration.