Homework Answers
A the rate determining step is the attachment of a halogen atom to an enol intermediate.
The rate determining step is the one in which the H+ is lost from the alpha carbon to form an enol intermediate
Add Answer to:
In the mechanism of the acid-catalyzed halogenation of ketones, which of the following is NOT true?...
What is the organic product In the mechanism of the acid-catalyzed halogenation of ketones, which of...
What is the organic product In the mechanism of the acid-catalyzed halogenation of ketones, which of the following is NOT true? A. The rate-determining step is the attachment of a halogen atom to an enol intermediate B. The first step is attachment of H^+ to the carbonyl oxygen. C. The reaction rate is independent of the halogen (X_2) concentration. D. The rate-determining step is the loss of an H^+ from an alpha-carbon to form an enol Intermediate.
Shown below is an acid-catalyzed halogenation of a ketone.
Shown below is an acid-catalyzed halogenation of a ketone. What would be the first step in the mechanism? Enolate attacks the halogen Base deprotonates the alpha-carbon Nucleophile attacks carbonyl carbon Protonate the carbonyl oxygen
In step I the alpha bromination of ketones is acid catalyzed.
1. In step I the alpha bromination of ketones is acid catalyzed. a. What acid is formed as Step 1 progresses? b. Why are alpha bromination reactions acid catalyzed? 2. Substitution of bromine by t-butyl amine is the second step of the reaction today. Secondary alkyl halides can undergo substitution by Sn1 or Sn2 mechanisms. Explain (in terms of electronic interactions) why an Sn2 mechanism is favored when the halogen is alpha to a carbonyl. (Hint: Like charges on adjacent atoms are unfavorable)
chapter 18 ketones and aldehydes Which is a step in the mechanism for the acid-catalyzed hydration...
chapter 18
ketones and aldehydes
Which is a step in the mechanism for the acid-catalyzed hydration of propanal? A B C D
Which of the following statements is (are) true about free radical halogenation of alkanes? choose only...
Which of the following statements is (are) true about free radical halogenation of alkanes? choose only one 1) The first of the chain-propagating steps is rate-determining. 2) The reaction proceeds by way of a flat sp2 hybridized free radical. 3) The chain-initiating step involves cleavage of a carbon-hydrogen bond to afford a carbon radical and a hydrogen atom. 4) Statements (The first of the chain-propagating steps is rate-determining) and (The reaction proceeds by way of a flat sp2 hybridized free...
What statement is TRUE about the mechanism for the reaction shown here? CH(CH) COACH CHỊ(CH3CO,CH NaOH...
What statement is TRUE about the mechanism for the reaction shown here? CH(CH) COACH CHỊ(CH3CO,CH NaOH excess heat CH,(CH2)2CO CHỊ Water attacks the carbonyl carbon to form a tetrahedral intermediate The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is CH3(CH2)2CO Na. Water deprotonates the alpha carbon.
Which of the following is cyclohexane-1,4-dicarboxylic anhydride? Which of the following statemen...
Which of the following is cyclohexane-1,4-dicarboxylic anhydride? Which of the following statements is true? A. Ester formation reactions are more violent and less easily controlled when anhydrides are uscd in place of acid chlorides. B. An acid chloride is most reactive of the common carboxylic acid derivatives because the chlorine atom causes a destabilizing inductive effect upon the carbon atom of the carbonyl group. C. Amides are more reactive than esters towards nucleophilic attack because nitrogen is less electronegative than...
oleh Secondary amines add to aldehydes and ketones to give enamines. Enamines are formed in a...
oleh Secondary amines add to aldehydes and ketones to give enamines. Enamines are formed in a reversible, acid-catalyzed process that begins with nucleophilic addition of the secondary amine to the carbonyl group, followed by transfer of the proton to yield a neutral carbinolamine. Protonation of the hydroxyl group converts it into a good leaving group, however there is no hydrogen left on the nitrogen to be lost to form a neutral imine product. Instead, a proton is lost from the...
CH3 CH2 Secondary amines add to aldehydes and ketones to give enamines. Enamines are formed in...
CH3 CH2 Secondary amines add to aldehydes and ketones to give enamines. Enamines are formed in a reversible, acid-catalyzed proces nucleophilic addition of the secondary amine to the carbonyl group, followed by transfer of the proton to yield a neutral carbinolanine Prosonation of the hydroxyl group converts it into a good leaving group, is no Instead, a proton is lost from the neighboring carbon to form an enamine. p, however there is no hydrogen left on the nitrogen to be...
What statement is TRUE about the mechanism for the reaction shown here? CHỊ(CH4)2COẠCH, CH,(CHỊ) CO,CH 2,...
What statement is TRUE about the mechanism for the reaction shown here? CHỊ(CH4)2COẠCH, CH,(CHỊ) CO,CH 2, CO,CH NAOH excess heat CHỊ(CH) CÓ CH, Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is CH3(CH2)2CO2Na. Water deprotonates the alpha carbon.
What is the organic product In the mechanism of the acid-catalyzed halogenation of ketones, which of the following is NOT true? A. The rate-determining step is the attachment of a halogen atom to an enol intermediate B. The first step is attachment of H^+ to the carbonyl oxygen. C. The reaction rate is independent of the halogen (X_2) concentration. D. The rate-determining step is the loss of an H^+ from an alpha-carbon to form an enol Intermediate.
chapter 18
ketones and aldehydes
Which is a step in the mechanism for the acid-catalyzed hydration of propanal? A B C D
What statement is TRUE about the mechanism for the reaction shown here? CH(CH) COACH CHỊ(CH3CO,CH NaOH excess heat CH,(CH2)2CO CHỊ Water attacks the carbonyl carbon to form a tetrahedral intermediate The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is CH3(CH2)2CO Na. Water deprotonates the alpha carbon.
Which of the following is cyclohexane-1,4-dicarboxylic anhydride? Which of the following statements is true? A. Ester formation reactions are more violent and less easily controlled when anhydrides are uscd in place of acid chlorides. B. An acid chloride is most reactive of the common carboxylic acid derivatives because the chlorine atom causes a destabilizing inductive effect upon the carbon atom of the carbonyl group. C. Amides are more reactive than esters towards nucleophilic attack because nitrogen is less electronegative than...
oleh Secondary amines add to aldehydes and ketones to give enamines. Enamines are formed in a reversible, acid-catalyzed process that begins with nucleophilic addition of the secondary amine to the carbonyl group, followed by transfer of the proton to yield a neutral carbinolamine. Protonation of the hydroxyl group converts it into a good leaving group, however there is no hydrogen left on the nitrogen to be lost to form a neutral imine product. Instead, a proton is lost from the...
CH3 CH2 Secondary amines add to aldehydes and ketones to give enamines. Enamines are formed in a reversible, acid-catalyzed proces nucleophilic addition of the secondary amine to the carbonyl group, followed by transfer of the proton to yield a neutral carbinolanine Prosonation of the hydroxyl group converts it into a good leaving group, is no Instead, a proton is lost from the neighboring carbon to form an enamine. p, however there is no hydrogen left on the nitrogen to be...
What statement is TRUE about the mechanism for the reaction shown here? CHỊ(CH4)2COẠCH, CH,(CHỊ) CO,CH 2, CO,CH NAOH excess heat CHỊ(CH) CÓ CH, Water attacks the carbonyl carbon to form a tetrahedral intermediate. The first step of the reaction involves protonation of the ester carbonyl oxygen. One of the products formed is CH3(CH2)2CO2Na. Water deprotonates the alpha carbon.
Most questions answered within 3 hours.
-
IN PYTHON ONLY !! Program 2: Re-work
program #5 (WeeklyHours) from the previous assignment such that...
asked 10 minutes ago -
The average length of time between arrivals at a turnpike
toll-booth is 26 seconds. What is...
asked 1 hour ago -
(a) A piston at 6.1 atm contains a gas that occupies a volume of
3.5 L....
asked 3 hours ago -
Please answer true or false. Words
cannot be changed or added in to make it true...
asked 3 hours ago -
An empty test tube weighs 15.923 grams. Then,
MgCl2•6H2O is added into the test tube. After...
asked 3 hours ago -
Assume memory access is 10 units of time and disk access is
10000 units of time....
asked 3 hours ago -
1. Are all good samples random?
2. Magazines often report surveys giving statistics such as “63%...
asked 3 hours ago -
Under all the various types of market structures, firms
must eventually earn some economic profits for...
asked 3 hours ago -
Consider the following fitness regime for a single locus trait
with two co-dominant alleles: w11 =...
asked 3 hours ago -
A large cable company reports the following.
80% of its customers subscribe to its cable TV...
asked 3 hours ago -
Please answer the question in brief.
Discuss the role of ERP in organizations. Are ERP tools...
asked 3 hours ago -
Discuss the pros and cons of collaborative software such
as SameTime. Does it increase productivity? What...
asked 3 hours ago