Organic Chemistry
7th Edition
ISBN: 9780321803221
Author: Paula Y. Bruice
Publisher: Prentice Hall
expand_more
expand_more
format_list_bulleted
Question
Chapter 10.9, Problem 21P
Interpretation Introduction
Interpretation:
Variation of substitution to elimination product when reaction of propyl bromide ion with
Concept Introduction:
Strong base favours elimination product, and a bulky base favours elimination product.
A high temperature favors elimination product. Steric hindrance favors elimination product.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
CH3
CH3
Br-
Br2
CH2CI2
CH3
CH3
H3C
H3C
Br
Electrophilic addition of bromine, Br2, to alkenes yields a 1,2-dibromoalkane. The reaction proceeds through a cyclic intermediate known as a
bromonium ion. The reaction occurs in an anhydrous solvent such as CH2C12.
In the second step of the reaction, bromide is the nucleophile and attacks at one of the carbons of the bromonium ion to yield the product. Due to
steric clashes, the bromide ion always attacks the carbon from the opposite face of the bromonium ion so that a product with anti stereochemistry
is formed.
Draw curved arrows to show the movement of electrons in this step of the mechanism.
Arrow-pushing Instructions
CH3
CH3
Br-
.CH3
.CH3
H3C
H3C
:Br
:Br:
Br
Brz
CH3
CH3
H3C
CH2CI2
H3C
Br
Electrophilic addition of bromine, Br2; to alkenes yields a 1,2-dibromoalkane. The reaction proceeds through a cyclic intermediate known as a bromonium ion.
The reaction occurs in an anhydrous solvent such as CH,Cl).
In the second step of the reaction, bromide is the nucleophile and attacks at one of the carbons of the bromonium ion to yield the product. Due to steric clashes,
the bromide ion always attacks the carbon from the opposite face of the bromonium ion so that a product with anti stereochemistry is formed.
Draw curved arrows to show the movement of electrons in this step of the mechanism.
Arrow-pushing Instructions
Br:
:Br:
.CH3
H3C
H3C
CH3
Br:
If the following molecules undergo free radical substitution, what is the order in which the hydrogen is easily replaced by bromine?
Chapter 10 Solutions
Organic Chemistry
Ch. 10.2 - Prob. 1PCh. 10.2 - Prob. 2PCh. 10.2 - Prob. 3PCh. 10.2 - Prob. 4PCh. 10.3 - Four alkenes are formed from the E1 reaction of...Ch. 10.3 - If 2-fluoropentane could undergo an E1 reaction,...Ch. 10.3 - Prob. 7PCh. 10.3 - Propose a mechanism for the following reaction:Ch. 10.4 - Prob. 9PCh. 10.4 - What products will be obtained from the El...
Ch. 10.4 - Prob. 11PCh. 10.5 - Prob. 12PCh. 10.6 - Prob. 14PCh. 10.7 - Why do cis-1-bromo-2-ethylcyclohexane and...Ch. 10.7 - Which isomer reacts more rapidly in an E2...Ch. 10.7 - Prob. 18PCh. 10.8 - Prob. 19PCh. 10.8 - Prob. 20PCh. 10.9 - Prob. 21PCh. 10.9 - Explain why only a substitution product and no...Ch. 10.9 - Prob. 23PCh. 10.9 - Prob. 24PCh. 10.9 - Prob. 25PCh. 10.9 - a. Explain why 1-bromo-2,2-dimethylpropane has...Ch. 10.10 - A small amount of another organic product is...Ch. 10.10 - What is the best way to prepare the following...Ch. 10.10 - Prob. 29PCh. 10.10 - Prob. 30PCh. 10.10 - Why is a cumulated diene not formed in the...Ch. 10.10 - What product is obtained when the following...Ch. 10.11 - Prob. 33PCh. 10.11 - Prob. 34PCh. 10 - Draw the major product obtained when each of the...Ch. 10 - Prob. 36PCh. 10 - a. Indicate how each of the following factors...Ch. 10 - Prob. 38PCh. 10 - A chemist wanted to synthesize the...Ch. 10 - Prob. 40PCh. 10 - Prob. 41PCh. 10 - Prob. 42PCh. 10 - Starting with an alkyl halide, how could the...Ch. 10 - Indicate which species in each pair gives a higher...Ch. 10 - Prob. 45PCh. 10 - For each of the following alkyl halides, indicate...Ch. 10 - Prob. 47PCh. 10 - When 2-bromo-2,3-dimethylbutane reacts with a...Ch. 10 - Prob. 49PCh. 10 - When the following compound undergoes solvolysis...Ch. 10 - cis-1-Bromo-4-tert-butylcyclohexane and...Ch. 10 - Draw the substitution and elimination products.Ch. 10 - Prob. 53PCh. 10 - Prob. 54PCh. 10 - Which of the following hexachlorocyclohexanes is...Ch. 10 - Explain why the rate of the reaction of...Ch. 10 - Prob. 57PCh. 10 - Two elimination products are obtained from the...Ch. 10 - Draw the structures or the product of the obtained...Ch. 10 - How could you prepare the following compounds from...Ch. 10 - cis-4-Bromocyclohexanol and...Ch. 10 - Prob. 62PCh. 10 - Prob. 63P
Knowledge Booster
Similar questions
- Explain the Process of Determining the Mechanism of Nucleophilic Substitution ?arrow_forward33) Complete the following reactions H₂ Wilkinson's catalyst H₂ Ni₂B H₂/Pd Lindler catalyst H₂ Li, Liq. NH3, -78 C NH4Clarrow_forwardWrite the expected substitution product(s) for each reaction and predict the mechanism by which each product is formedarrow_forward
- 2. Identify the nucleophile and electrophile in the given reaction. Show the electron rich and the electron deficient sites in the substrates. Et20 CI Nucleophile: Electrophile:arrow_forwardmethanol + CH3OH Suppose you were told that the above reaction was a substitution reaction but you were not told the mechanism. Evaluate the following categories to determine the reaction mechanism and then draw the structure of the major organic product. Type of alkyl halide: Type of nucleophile: Solvent: Is the product racemic?arrow_forward.Which one of the following molecules can react as electrophile in reactions with alkenes? CH3OH NaCI HCI KCN NaCI O HCI O KCN O CH3OHarrow_forward
- Provide the whole reaction mechanism (generation of electrophile, nucleophile, bond formation, bond breaking and movement of arrows) and the final product of the following reactions:arrow_forwardDraw the structure of the major organic product of the reaction. col CI / 1. LIAIH4, ether 2. H30+ • You do not have to consider stereochemistry. t √ [F ? Ⓡ ChemDoodlearrow_forwardCH3 Ph3P-CHCH3 H3C H3C Aldehydes and ketones are converted into alkenes by means of a direct nucleophilic addition called the Wittig reaction. In the reaction, a triphenylphosphorine ylide, also called a phosphorane, adds to an aldehyde/ketone to give a four-membered cyclic intermediate called an oxaphosphetane. The oxaphosphetane is not isolated but instead spontaneously decomposes to release triphenylphosphine oxide and an alkene. Ph3P-CHCH3 H3C The ylide is formed by reaction of triphenylphosphine, a good nucleophile, with a primary alkyl halide in an S 2 reaction, followed by deprotonation of the carbon with a strong base, such as butyllithium. The carbonyl carbon and the carbon originally bonded to the halogen become the two carbons with the double bond in the product alkene :0: CH3 Com The real value of the Wittig reaction lies in its ability to yield an alkene of predictable structure, as the C-C bond is precisely where the C=O bond was in the reactant and no isomers (other than…arrow_forward
- LOH NaOH `N' (S) H20 'N' ČI This nucleophilic substitution occurs with rearrangement. Draw curved arrows to show the movement of electrons in the following step of the reaction mechanism. Arrow-pushing Instructions OH :OH N. H.arrow_forwardWhich chlorination product is formed via the lowest energy transition state in the rate-determining step? + CI-CI de .CI O All radical chlorinations require the same activation energies.arrow_forwardBelow is the equation for a nucleophilic substitution reaction and some experimental data. CH3CH2Br + CH3COO- ⇌ CH3CH2CO2CH3 + Br- ΔH=-75 kJ/mol Rate = k [CH3CH2Br][CH3COO-] Which reaction energy profile would be the best representative of the data provided?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
EBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:9781305446021
Author:Lampman
Publisher:CENGAGE LEARNING - CONSIGNMENT