QUESTION 12 Butanal (CH3CH₂CH₂CHO) reacts with (R)-1,2-propanediol (HO-CH₂CH₂CH2-OH) in the presence of an acid catalyst to give two isomeric acetals. What is their isomeric relationship? O a. They are enantiomers O b. They are conformers O c. They are diastereomers O d. They are constitutional isomers

QUESTION 12 Butanal (CH3CH₂CH₂CHO) reacts with (R)-1,2-propanediol (HO-CH₂CH₂CH2-OH) in the presence of an acid catalyst to give two isomeric acetals. What is their isomeric relationship? O a. They are enantiomers O b. They are conformers O c. They are diastereomers O d. They are constitutional isomers

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

Chapter22: Organic And Biological Molecules

Section: Chapter Questions

Problem 65E

See similar textbooks

Similar questions

1. Optical isomers differ in:a. sign of their optical activityb. their structurec. sign and magnitude of their optical activityd. magnitude of their optical activitye. All of the above 2. Which compound contains an asymmetric carbon?a. n-butanol d. 2-methyl-1-butanolb. Isopropyl alcohol e. None of the abovec. 1-bromo-2-methyl-1-propene 3. Which of the compounds can exist as enantiomers?A. Isopropyl chlorideB. BromochloromethaneC. Sec-butyl chlorideD. 1-chloro-2methylpentane a. A and B b. B and D c. C and D d. B and C
Which of these reagent(s) will not react with HOCH2CH2CH2COOH? A) NaCN in ethanol B) C2H5OH in the presence of an acid catalyst. C) (CH3CO)2O D) Concentrated H2SO4
Answer the following: (i) Haloalkanes easily dissolve in organic solvents, why? .. (ii) What is known as a racemic mixture ? Give an example. (iii) Of the two bromoderivatives, C6H5CH(CH3)Br and C6H5CH(C6H5)Br which one is more reactive in SN1 substitution reaction and why?
4. Compound A has the formula C 8H 8. It reacts rapidly with KMnO 4 to give CO 2 and a carboxylic acid, B (C 7H 6O 2), but reacts with only 1 molar equivalent of H 2 on catalytic hydrogenation over a palladium catalyst. On hydrogenation under conditions that reduce aromatic rings, 4, equivalents of H 2 are taken up and hydrocarbon C (C 8H 16) is produced. What are the structures of A, B, and C.
An unknown alcohol with a molecular formula of C7H14O was oxidized to an aldehyde with HOCl. When an acidic solution of the alcohol was distilled, two alkenes were obtained. The alkene formed in greater yield was determined to be 1-methylcyclohexene. The other alkene formed the original un-known alcohol when treated with BH3/THF followed by H2O2, HO-, and H2O. Identify the unknown alcohol.
(10pts) Compound A, C10H16, was found to be optically active. On catalytic reduction over a palladium catalyst, 2 equivalents of hydrogen were absorbed, yielding compound B, CioH2o. On ozonolysis of A, two fragments were obtained. One fragment was identified as acetic acid (CHCOOH). The other fragment, compound C, was an optically active carboxylic acid, C8H14O2. Write reactions, and draw the correct structures for A-C, explain your answer in detail.
When (CH3CH2)3CBr is added to CH3OH at room temperature, the product is(CH3O)C(CH2CH3)3. Propose a mechanism(s) for the reactions leading to theseproducts and use curved arrows to show the movement of electrons.
question 1 i) Explain the acidity of terminal alkanes, alkenes and alkynes. ii) Compound A has the formula C10H16. On catalytic hydrogenation over palladium, it reacts with only 1 molar equivalent of H2 to yield C. Compound A also undergoes reaction with ozone, followed by zinc treatment, to yield a symmetrical diketone, B (C10H16O2). By showing the reaction steps, predict the structures of A, B and C. iii) Show the reaction mechanism of cyclohexene with Br2.
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
Suggest the product/s of the following reaction: Question 11.docx 13 KB A. trans-1,2-cyclohexanediol B. cis-1,2-cyclohexanediol C. dicarboxylic acid only or carboxylic acid only D. ketone and a carboxylic acid E. aldehyde and a carboxylic acid
Question 4: The reaction of propylbenzene with NBS gives: 1-bromo-3-phenylpropane 2-bromo-1-phenylpropane 1-bromo-1-phenylpropane A mixture of all three of the above compound The reaction of 1-phenyl-1-propene with HBr gives: Question 2 options: 1-bromo-3-phenylpropane 2-bromo-1-phenylpropane 1-bromo-1-phenylpropane A mixture of all three of the above compounds Question 17: The pKa of cyclopentadiene is much smaller than typical for an allylic hydrocarbon. The best explanation for this observation is: Question 17 options: Cyclopentadiene is much more stable than expected. Cyclopentadiene is much less stable than expected. The cyclopentadienyl anion is aromatic. The cyclopentadienyl anion is antiaromatic.
Indicate the letter of the correct answer and kindly briefly explain the letter of answer. 1. What is the product of the reaction between 1,3-dibutene and bromoethene? (A) No reaction occurs (B) 4-bromocyclohexene (C) 3-bromocyclohexene (D) 3-bromocyclopentene 2. Cyclohexene undergoes hydrobromination. Which of these is a possible product? (A) Bromocyclohexane (B) All of these (C) Trans 1,2-dibromocyclohexane (D) Cis 1,2-dibromocyclohexane 3. A hydrocarbon molecule is saturated if the molecule contains (A) Single covalent bonds, only (B) A double covalent bond, only (C) A triple covalent bond (D) Single and double covalent bonds 4. As a chemical bond forms between 2 hydrogen atoms in a system, energy is released and the stability of the system. (A) Increases (B) Decreases (C) Remains the same (D) None of these