Stereochemistry of bromine addition to trans cinnamic acid

what product would you expect to obtain by the addition of bromine to cis cinnamic acid

This process depicted an electrophilic addition of a halogen to an asymmetrically substituted alkene. The final product was weighed in to be 0.

Bromination of trans cinnamic acid abstract

Thus, one can measure different melting points of the products, and boiling points and different densities. Diastereomers can have different physical properties and reactivity. Bromination is needed to add bromine atoms to the double bond by way of anti addition through a Bromonium ion intermediate. After cooling, this mixture was separated using vacuum filtration, which allowed separating the 2,3-dibromophenylpropanoic acid. Reflux is the process of boiling reactants while continually cooling the vapor returning it back to the flask as a liquid. However, erythro diastereomers are most likely favored. Diastereomers are not mirror images of each other and non-superimposable. The acid was rinsed 3 times with cold dichloromethane. The subsequent attack by bromide ion at the opposite face to the Bromonium ion will yield the products of anti addition. The purpose of the reflux is to allow reaction to happen at a higher temperature and not allow a high loss of solvent or product. Post-Lab Questions: 1. The reason for such a high yield was due to substance not being fully dried when weighing most likely. The dibromide becomes the precipitate of this solution during the reaction.

The subsequent attack by bromide ion at the opposite face to the Bromonium ion will yield the products of anti addition. It is used to heat a mixture for extended periods and at certain temperatures.

bromination of cis cinnamic acid mechanism

VPA is an effective…. Erythro is the diastereomers that has two identical ligands on same side on fisher projection; while in threo diastereomers has two identical ligands on opposite sides of fisher projection. Diastereomers are not mirror images of each other and non-superimposable.

I believe the results were supposed to include the product being erythro-2,3-dibromophenypropanoic acid and the mechanism that took place in the experiment was in fact the bromonium ion mechanism.

Since the product has 2 chiral centers 4 stereoisomers are possible.

State a hypothesis related to the stereochemical outcome of the bromination of trans stilbene

Since the product has 2 chiral centers 4 stereoisomers are possible. Diastereomers are not mirror images of each other and non-superimposable. Erythro is the diastereomers that has two identical ligands on same side on fisher projection; while in threo diastereomers has two identical ligands on opposite sides of fisher projection. The reason for such a high yield was due to substance not being fully dried when weighing most likely. After cooling, this mixture was separated using vacuum filtration, which allowed separating the 2,3-dibromophenylpropanoic acid. What product or products would you expect to obtain by the addition of bromine to cis-cinnamic acid, assuming that it reacts by the same mechanism as the Related Documents The Interaction Between Carbenoxolone and Valproic Acid Essay tachycardia and vomiting when it is applied systematically Juszczak and Swiergiel The purpose of the reflux is to allow reaction to happen at a higher temperature and not allow a high loss of solvent or product. VPA is an effective…. It allowed the removal of any leftover bromine from the product and is also incapable of dissolving the product. There are several sources of error that could have given this result including: the product not being dry enough after vacuum filtration, the solution not mixed enough in the experiment, much loss of the product in transferring, and excess acetic acid contaminating the product which would change the melting point of the product. Diastereomers can have different physical properties and reactivity.

Bromination is needed to add bromine atoms to the double bond by way of anti addition through a Bromonium ion intermediate. We avoided using higher doses of carbenoxolone due to these side effects.

2 3-dibromo-3-phenylpropanoic acid ir spectrum

Would you expect the product from your reaction to be optically active? Bromination is needed to add bromine atoms to the double bond by way of anti addition through a Bromonium ion intermediate. The purpose of the reflux is to allow reaction to happen at a higher temperature and not allow a high loss of solvent or product. Post-Lab Questions: 1. This process depicted an electrophilic addition of a halogen to an asymmetrically substituted alkene. Since the product has 2 chiral centers 4 stereoisomers are possible. The mixture was later cooled to room temperature and then placed on an ice bath. There are several sources of error that could have given this result including: the product not being dry enough after vacuum filtration, the solution not mixed enough in the experiment, much loss of the product in transferring, and excess acetic acid contaminating the product which would change the melting point of the product. After cooling, this mixture was separated using vacuum filtration, which allowed separating the 2,3-dibromophenylpropanoic acid. This low percent error was gained from the lack of mass of the product obtained after vacuum filtration. Diastereomers can have different physical properties and reactivity.
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Stereochemistry of Bromine Addition to an Alkene