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Please help with all these questions in detail. This is
related to the organic chemistry lab,...
Stereochemistry of bromine addition 1) To investigate the mechanism for the addition of bromine to an...
Stereochemistry of bromine addition 1) To investigate the mechanism for the addition of bromine to an alkene, we will use the melting point of our brominated products. The three possible outcomes for this lab are to obtain 1)only the syn enantiomers, 2)only the anti enantiomers, or 3)a mixture of diastereomers. Match these possible outcomes to the three possible mechanisms described in the lab manual, bromonium ion, concerted Br2 activation, and carbonation 2) In this experiment we don't crystallize the final...
prelab wants me to draw a mechanism for both pairs. so one mechanism for the 93-95...
prelab wants me to draw a mechanism for both pairs. so one
mechanism for the 93-95 C pair and another mechanism for the
202-204 C pair. Please draw out full mechanism with arrow pushing
please for both!
trans-cinnamic acid Bromination of trans-cinnamic acid can result in the formation of two different pairs of enantiomers (see Figure 4). Fortunately, the pairs of enantiomers have very different melting points. Thus, we can determine the result of this reaction by examining the melting...
Organic Chemistry Addition of Bromine to an Alkene-HELP ASAP PLEASE table of reagents and properties Reagent &n
Organic Chemistry Addition of Bromine to an Alkene-HELP ASAP PLEASE table of reagents and properties Reagent MW (g/mol) mp(Celsius) d( g/ml) trans-cinamic acid 148.2 132-135 acetic acid 60 1.05 pyridinium tribromide 319.8 - 2,3-dibromo-3-phenylpropanoic acid 308.0 Pair A: 93-95, Pair B: 202-204 Organic Chemistry- addition of bromine to an Alkene For a lab the preparation of 2,3-dibromo-3 phenylpropanoic acid was done. 1.2 g of trans-cinnamic acid was dissolved in 4 ml of glacial acetic acid. 2.5 g of pyrimide tribromide...
Post lab questions for chromatography and melting point lab. i have a few ideas of what the answers to these questions s...
Post lab questions for chromatography and melting point lab. i
have a few ideas of what the answers to these questions should be,
but I would like to double check. if anyone can help me, that would
be so awesome. Thank you!
A student cools a sample in a capillary tube after melting it. Upon attempting to determine the melting point on the same sample, the student does not obtain the same melting point. Why? A student places his TLC...
I need some help with an alkene bromination lab. These are the directions: For this assignment,...
I need some help with an alkene bromination lab. These are the directions: For this assignment, the target compound that you should synthesize is anti-2,3-dibromo-butane. This is a stereospecific electrophilic alkene addition reaction. Examine the product to determine the location of the new functionality. Keep in mind the bromonium ion intermediate and the consequences of its structure. The nucleophile again attacks in a manner that controls the stereochemistry of the product. ----------------------------- ***I need to know what materials, solvent, and...
please help me with questions 6-10 (and the bonus if possible) thank you! Answer: 6. How...
please help me with questions 6-10 (and the bonus if possible)
thank you!
Answer: 6. How many carbonyl groups are generated upon treatment of the molecule below with ozone, followed by zinc metal and water? HNM 0 obila Ans. 7. For the following reaction draw out the expected major organic product(s). Include regiochemical and/or stereochemical details as relevant. (2 pts) Bra, H,0 a Bre, H2O Answer: What is the expected major product upon reaction of 1-pentene with Cl2? نما دن...
Postlab Questions Answer the following questions on a separate sheet or in your lab notebook. Make...
Postlab Questions Answer the following questions on a separate sheet or in your lab notebook. Make sure that the copy page is readable! D) Calculate the percentage yield for both reactions. Show all calculations. 2) What is the color of the reaction at the beginning of reaction? What causes the color? 3) Why do you dissolve maleic acid in diethyl ether and fumaric acid in water? 4) Give the complete reaction mechanisms for the formation of meso and racemic 2,3-...
Look up and draw the mechanism for the addition of Br2 to double bonds. Reference the...
Look up and draw the mechanism for the addition of Br2 to
double bonds. Reference the source from which you acquired the
mechanism.
Give the IUPAC name of the major product in the above-mentioned
reaction.
Draw the major product of obtained in the addition of Br2 to
stilbene.
Is this isomer chiral? What would be the optical rotation if
this sample was placed in a polarimeter?
Would a student obtain the same product if you started with
cis-stilbene instead of...
please help me with Organic Chemistry/Alkenes problems. Thank you! Directions: Place your answers to the following...
please help me with Organic Chemistry/Alkenes problems. Thank you!
Directions: Place your answers to the following questions in the spaces provided. 1. A common problem in the acid-catalyzed hydration of alkenes is the formation of an ether byproduct. Show the formation of the ether byproduct in relation to the reaction below by providing a curved-arrow mechanism for its formation. (2 pts) H30+ Н,0 OH Ans. 2. Which is the correct sequence of steps necessary to complete the following reaction? он...
Name:_ Post-Lab Questions You're the TA in an organic lab and the students are running a...
Name:_ Post-Lab Questions You're the TA in an organic lab and the students are running a column to separate the following compounds: methyl cinnamon trans-cinnamic acid HW 1. Student A calls you over and explains that after running his column and showing you the TLC of fractions 1-5 which only have one spot by UV. He combined these fractions, removed the solvent and took a melting point. He is worried something is wrong because he got 38°C and not 133°C....
prelab wants me to draw a mechanism for both pairs. so one
mechanism for the 93-95 C pair and another mechanism for the
202-204 C pair. Please draw out full mechanism with arrow pushing
please for both!
trans-cinnamic acid Bromination of trans-cinnamic acid can result in the formation of two different pairs of enantiomers (see Figure 4). Fortunately, the pairs of enantiomers have very different melting points. Thus, we can determine the result of this reaction by examining the melting...
Post lab questions for chromatography and melting point lab. i
have a few ideas of what the answers to these questions should be,
but I would like to double check. if anyone can help me, that would
be so awesome. Thank you!
A student cools a sample in a capillary tube after melting it. Upon attempting to determine the melting point on the same sample, the student does not obtain the same melting point. Why? A student places his TLC...
please help me with questions 6-10 (and the bonus if possible)
thank you!
Answer: 6. How many carbonyl groups are generated upon treatment of the molecule below with ozone, followed by zinc metal and water? HNM 0 obila Ans. 7. For the following reaction draw out the expected major organic product(s). Include regiochemical and/or stereochemical details as relevant. (2 pts) Bra, H,0 a Bre, H2O Answer: What is the expected major product upon reaction of 1-pentene with Cl2? نما دن...
Postlab Questions Answer the following questions on a separate sheet or in your lab notebook. Make sure that the copy page is readable! D) Calculate the percentage yield for both reactions. Show all calculations. 2) What is the color of the reaction at the beginning of reaction? What causes the color? 3) Why do you dissolve maleic acid in diethyl ether and fumaric acid in water? 4) Give the complete reaction mechanisms for the formation of meso and racemic 2,3-...
Look up and draw the mechanism for the addition of Br2 to
double bonds. Reference the source from which you acquired the
mechanism.
Give the IUPAC name of the major product in the above-mentioned
reaction.
Draw the major product of obtained in the addition of Br2 to
stilbene.
Is this isomer chiral? What would be the optical rotation if
this sample was placed in a polarimeter?
Would a student obtain the same product if you started with
cis-stilbene instead of...
please help me with Organic Chemistry/Alkenes problems. Thank you!
Directions: Place your answers to the following questions in the spaces provided. 1. A common problem in the acid-catalyzed hydration of alkenes is the formation of an ether byproduct. Show the formation of the ether byproduct in relation to the reaction below by providing a curved-arrow mechanism for its formation. (2 pts) H30+ Н,0 OH Ans. 2. Which is the correct sequence of steps necessary to complete the following reaction? он...
Name:_ Post-Lab Questions You're the TA in an organic lab and the students are running a column to separate the following compounds: methyl cinnamon trans-cinnamic acid HW 1. Student A calls you over and explains that after running his column and showing you the TLC of fractions 1-5 which only have one spot by UV. He combined these fractions, removed the solvent and took a melting point. He is worried something is wrong because he got 38°C and not 133°C....
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