Answered: show the intermediates for…

show the intermediates for trans-1-aryl-1, 3 - butadienes and 1 -aryl-1, 2- butadiene when reacted with HBr, discuss their negative rho values relative to each other and why they are diffent

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Give the product in the addition of HBr to 1-pentyne in the presence of peroxide 1-Bromopentane 2-Bromopentane 2-Bromo-2-pentene 2-Bromo-1-pentene 1-Bromo-1-pentene
Draw the structural formula(s) for the major product(s) of each of the following reactions. Unless required, ignore stereochemical details
Draw the major organic product for the reaction of 1-phenylpropan-1-one with sodium hydride followed by ethyl iodide. Ignore stereochemistry. In Part 2 answer the question about the transformation
Treatment of the following stereoisomer of 1-bromo-1,2-diphenylpropane with sodium ethoxide in ethanol gives a single stereoisomer of 1,2-diphenylpropene. I H C6H5 H3C Br C6H5 CH3CH2O Na+ CH3CH2OH Draw the E2 elimination product of the reaction. Take into account that the starting stereochemistry affects the resulting double bond stereochemistry. • Consider E/Z stereochemistry of alkenes. • Do not show stereochemistry in other cases. •You do not have to explicitly draw H atoms. • In cases where there is more than one answer, just draw one.
2. What product would you expect to obtain from the thermal cyclization of (2E,4Z,6E)-2,4,6-octatriene and of (2E,4Z,6Z)-2,4,6-octatriene. (Show the structure of product and name them.) From (2E,4Z,6E)-2,4,6-octatriene: From (2E,4Z,6Z)-2,4,6-octatriene: structure: structure: name: name:
Which statement best characterizes the following reaction of 2-phenylpropan-2-ol with HBr? OH CH3 CH3 + HBr Br CH3 CH3 + H₂O It is an SN1 reaction with bromide as the nucleophile and water as the leaving group. It is an SN1 reaction with HBr as the nucleophile and hydroxide ion (HO-) as the leaving group. It is a one step concerted reaction with bromide as the nucleophile and hydroxide ion (HO-) as the leaving group. It is an SN2 reaction with bromide as the nucleophile and water as the leaving group.
3. Using the carbon sources provided and any other necessary reagents needed, propose a viable synthesis for the product shown. Your synthesis must include a Diels-Alder reaction. For each step in your synthesis be sure to show the reagents/conditions necessary for that step and also draw the major product expected for each step leading to the product. You will also need to use reactions discussed in previous chapters as well. Carbon Sources Available H₂C=CH2 steps CH₂Br
what are the reagents to carry out this multi-step reaction and what are their inetermediates? explain regioselectivity.
Arrange the following substrates in order of their increasing SN2 reactivity with KCN: bromoethane, 1-chloro-3,3-dimethylpentane, 1-chloro-2,2-dimethylpentane, and 2-bromo-2-methylpentane.
A carbon-deuterium bond (C-D) is stronger than a carbon hydrogen bond (C-H) and takes more energy to break If Compound Q is subjected to an E2 reaction, you get the following results. Explain the product ratio. Br K O-C(CH) H. BO% 20% b) When Compound P undergoes an S.1/E1 reaction, you get following results. Unlike the E2 reaction above, in this case, there is almost no difference in the product ratio. Explain Ph Ph Bre CHIOH heat Sal anpoud
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…