In the presence of a small amount of bromine, the following light-promoted reaction has been observed. CH3 H₂C H₂C CH3 pa H Br + Br₂ hv CH3 "Br H₂C. (a) Write a mechanism for this reaction. Your mechanism should explain how both products are formed. (Hint: Notice which H atom has been lost in both products.) (b) Explain why only this one type of hydrogen atom has been replaced, in preference to any of the other hydrogen atoms

In the presence of a small amount of bromine, the following light-promoted reaction has been observed. CH3 H₂C H₂C CH3 pa H Br + Br₂ hv CH3 "Br H₂C. (a) Write a mechanism for this reaction. Your mechanism should explain how both products are formed. (Hint: Notice which H atom has been lost in both products.) (b) Explain why only this one type of hydrogen atom has been replaced, in preference to any of the other hydrogen atoms

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...

See similar textbooks

Similar questions

When 3,4-dimethyl-2-pentanol undergoes dehydration, a major alkene formed is 2,3-dimethyl-2-pentene. Give the complete mechanism for this reaction.
Use curved arrow formalism to draw the mechanism of the reaction shown below. Include intermediates and their relevant resonance forms. Be sure to account for all the products. Br CH3OH OCH3 + Joc 1w OCH 3
In an SN2 reaction between 2-chlorobutane and iodide ion, what happens to the rate of the reaction if: (a) the concentration of 2-chlorobutane is doubled? (b) the concentration of iodide is doubled?
A set of three nucleophilic displacement reactions is shown below: - Br -Br -Br "CHз Hзс CHз C В A NaCN CH-он SN2 reaction Which reaction (A, B, or C) proceeds the fastest? Which reaction (A, B, or C) proceeds the slowest?
Mechanism: A reaction mechanism for the following reaction is shown below. H+ CEN CEN: N-H || -C-OH H₂O, H* Step 1 wand woled mot ozsm E Step 3 N-H C-OH C=N-H Step2 C=N-H H-O-H H₂O motno vgiene fesrigid onlt to smotnos -C=N-H a) The overall reaction is an example of b) Step 1 is c) Step 3 is d) Draw in the curved arrows for each step. e) Identify the nucleophiles and electrophiles where appropriate. f) Fill in the reaction energy diagram. H₂O: rate determining step to noipojovo hamwell sit 5(emise erit voittons 10) vanas mi sdgin al rainW di of E^ reaction progress →
Predict the product(s) of the following reactions, including stereochemistry when necessary and identify the mechanism of each substitution reaction (SN1 vs SN2). Draw the reaction mechanism (reaction arrows) for any one of the reactions to show how the product is formed.
When the following compound is treated with the base sodium hydroxide (NaOH), an intramolecular 5, 2 reaction occurs. Please draw both the organic intermediate and the major organic product obtained. Be sure to include the correct stereochemistry and charges. ( OH D D ta
5) A chemist is tasked with converting tetrahydro-2H-pyran-4-ol into 4-bromotetrahydro-2H-pyran. The chemist proposed two synthetic pathways to the desired product. Choose the pathway that produces the desired product, circle one and briefly explain your choice. A complete answer will explain how the chosen pathway produces the 4-bromotetrahydro-2H-pyran AND why the other pathway was not chosen. this nathway Synthetic Pathway #1 HBr OH Synthetic Pathway #2 1) TsCl, pyridine 2) NaBr
Br CH3OH + Br-Br H3CO The mechanism proceeds through a first cationic intermediate, intermediate 1. Nucleophilic attack leads to intermediate 2, which goes on to form the final product. In cases that involve a negatively charged nucleophile, the attack of the nucleophile leads directly to the product. +Br + CH3OH Br Intermediate 1 Intermediate 2 (product) In a similar fashion, draw intermediate 1 and intermediate 2 (final product) for the following reaction. OH + Br2 + HBr Br racemic mixture • Pay attention to the reactants, they may differ from the examples. In some reactions, one part of the molecule acts as the nucleophile. • You do not have to consider stereochemistry. • Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate intermediate 1 and intermediate 2 using the → symbol from the dropdown menu.
Be sure to answer all parts. Draw all products, including stereoisomers, in the following reaction. CH, Br CH,CO0 Part 1 Identify which mechanism(s) the reaction will undergo. Sy1 O Sy2 E1 O E2 Part 2 The number of Syl product(s): 2 The number of El product(s): 2 Part 3 CH3 CHCO0 The Sy1 product: view structure CH The major El product: view structure The minor El product: view structure
Treatment of 1,2-dibromoethane with the dithiolate dianion shown in the reaction below leads to two products as shown. Draw the structure for each molecular formula and provide a detailed mechanism for the formation of both products. CH,Br CH,SNa C4H8S2 + C,H12S,Br, CH,Br CH2SNa
A proton (H*) from trifluoromethanesulfonic acid, CF3SO2OH, can add to the alkyne shown to yield two different carbocation products. (a) Draw the mechanism for each of these steps, along with the corresponding products. (b) Which carbocation is more stable? H3C C-c=CH H2 + H-OSO,CFз ? H2