what is the purpose of an air condenser in the bromination of an alkene?
Homework Answers
Solution: (To avoid the loss of bromine)
Bromine has a boiling point of 58.8 °C and bromination of alkene is an exothermic reaction. Hence, it is difficult to avoid the loss of Br2 gas during the progress of reaction. Thus, air condenser cools the reaction mixture and prevents the loss of Br2.
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what is the purpose of an air condenser in the bromination of an
alkene?
1. Bromination of an alkene is restricted to a syn addition. In this problem you will...
1. Bromination of an alkene is restricted to a syn addition. In this problem you will design an experiment to validate or provide evidence that alkene bromination undergoes syn addition You will use the following starting alkene a) trans-stilbene b) cis-stilbene A. Draw the mechanisms showing all electron flows (curved arrows) and the cyclic halonium intermediate to predict the stereochemical products of the bromination reaction for (a) trans-stilbene and (b) cis-stilbene formed from syn addition. B. Design the experiment to...
Bromination of an alkene by N-bromosuccinimide (NBS) in the presence of light or peroxide is a...
Bromination of an alkene by N-bromosuccinimide (NBS) in the
presence of light or peroxide is a radical reaction and produces an
allylic bromide. For the following bromination of
3-methylcyclopentene, select the allylic bromides from the set at
the right that would be products of the reaction.
i performed the brominationnof trans-stilbene by mixing transtilbene, a brominating agent and chloroform. what is the...
i performed the brominationnof trans-stilbene by mixing transtilbene, a brominating agent and chloroform. what is the purpose of chloroform in this experiment. also what is the purpose of the air condenser in bromination?
In the distillation set-up, what is the purpose of the water-cooled condenser? Sea water is a...
In the distillation set-up, what is the purpose of the water-cooled condenser? Sea water is a mixture which has salt, NaCl, dissolved in water. How can these compounds be separated?
Explantion: In a radical allylic bromination of alkenes with NBS reaction, why does allylic bromination occur...
Explantion: In a radical allylic bromination of alkenes with NBS reaction, why does allylic bromination occur instead of alkene bromination? Secondly, why does the more substituted alkene predominate if more than one alkene can form from such a reaction?
Answer the following questions about radical halogenation QUESTION 1 Performing allylic bromination of an asymmetric alkene...
Answer the following questions about radical halogenation
QUESTION 1 Performing allylic bromination of an asymmetric alkene produces two regiochemical outcomes due to resonance, and two conformations (R) and (S) for each chirality center produced. This is further complicated if you make the mistake of using Br2 as your source of bromine radicals, as the addition reaction producing alkyl dibromides competes with the allylic bromination. Br2, hv ??? Categorize each of the compounds shown below as an [A] allylic bromination product,...
Bromination of trans-Stilbene Introduction can drastically valla very viss The alkene halogenation reaction is a class...
Bromination of trans-Stilbene Introduction can drastically valla very viss The alkene halogenation reaction is a class of reacties in which ha s as clectrophiles 10 attack double bond. Reactivity of halogens can drastically in the fileness of a halogenation react For example, the high reactivity of fluorine e of jodine results in very slow orine pas causes a very vigorous reaction while the low reactivity reactions. Chlorine and bromine showmoderate reactivity and a commonly used in this type of reaction:...
Characterize the following alkene as having the E or Z configuration. Draw the product(s) of bromination...
Characterize the following alkene as having the E or Z
configuration.Draw the product(s) of bromination of this compound, including all
expected stereoisomers (if any).Use wedge-and-dash bonds to designate the stereochemistry at any
chirality centers, and make sure to draw an explicit hydrogen if a
chirality center has one.
Characterize the following alkene as having the E or Z configuration. Draw the product(s) of bromination...
Characterize the following alkene as having the E or Z
configuration. Draw the product(s) of bromination of this compound,
including all expected stereoisomers (if any). Use wedge-and-dash
bonds to designate the stereochemistry at any chirality centers,
and make sure to draw an explicit hydrogen if a chirality center
has one.
Characterize the following alkene as having the E or Z configuration. Draw the product(s) of bromination of this...
Characterize the following alkene as having the E or Z configuration. Draw the product(s) of bromination of this compound, including all expected stereoisomers (if any). Use wedge-and-dash bonds to designate the stereochemistry at any chirality centers, and make sure to draw an explicit hydrogen if a chirality center has one.
1. Bromination of an alkene is restricted to a syn addition. In this problem you will design an experiment to validate or provide evidence that alkene bromination undergoes syn addition You will use the following starting alkene a) trans-stilbene b) cis-stilbene A. Draw the mechanisms showing all electron flows (curved arrows) and the cyclic halonium intermediate to predict the stereochemical products of the bromination reaction for (a) trans-stilbene and (b) cis-stilbene formed from syn addition. B. Design the experiment to...
Bromination of an alkene by N-bromosuccinimide (NBS) in the
presence of light or peroxide is a radical reaction and produces an
allylic bromide. For the following bromination of
3-methylcyclopentene, select the allylic bromides from the set at
the right that would be products of the reaction.
In the distillation set-up, what is the purpose of the water-cooled condenser? Sea water is a mixture which has salt, NaCl, dissolved in water. How can these compounds be separated?
Answer the following questions about radical halogenation
QUESTION 1 Performing allylic bromination of an asymmetric alkene produces two regiochemical outcomes due to resonance, and two conformations (R) and (S) for each chirality center produced. This is further complicated if you make the mistake of using Br2 as your source of bromine radicals, as the addition reaction producing alkyl dibromides competes with the allylic bromination. Br2, hv ??? Categorize each of the compounds shown below as an [A] allylic bromination product,...
Bromination of trans-Stilbene Introduction can drastically valla very viss The alkene halogenation reaction is a class of reacties in which ha s as clectrophiles 10 attack double bond. Reactivity of halogens can drastically in the fileness of a halogenation react For example, the high reactivity of fluorine e of jodine results in very slow orine pas causes a very vigorous reaction while the low reactivity reactions. Chlorine and bromine showmoderate reactivity and a commonly used in this type of reaction:...
Characterize the following alkene as having the E or Z
configuration.Draw the product(s) of bromination of this compound, including all
expected stereoisomers (if any).Use wedge-and-dash bonds to designate the stereochemistry at any
chirality centers, and make sure to draw an explicit hydrogen if a
chirality center has one.
Characterize the following alkene as having the E or Z
configuration. Draw the product(s) of bromination of this compound,
including all expected stereoisomers (if any). Use wedge-and-dash
bonds to designate the stereochemistry at any chirality centers,
and make sure to draw an explicit hydrogen if a chirality center
has one.
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