Practice: Show the mechanism for the addition of Bromine and water to 2-methylpropene showing the stereochemistry...
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...
Propose a mechanism for the addition of water and bromine to cyclopentene, taking care to show why the results of the product (halohydrin) trans and how both enantiomers are formed.
2. Draw the entire mechanism for the syn- addition of bromine + trans-cinnamic acid. All stereochemistry must be shown. All chirality (R, S) must be labeled for chiral centers.
3. Draw the entire mechanism for the anti- addition of bromine + trans-cinnamic acid. All stereochemistry must be shown. All chirality (R, S) must be labeled for chiral centers.
3. Draw the entire mechanism for the anti- addition of bromine + trans-cinnamic acid. All stereochemistry must be shown. All chirality (R, S) must be labeled for chiral centers. *Use backside of paper.
Practice: Show the product and mechanism for the hydration of cyclohexene in a reaction catalyzed by sulfuric acid. A similar reaction can be used to make ethers (instead of alcohols) using an alcohol (instead of water). This reaction is called alcoholysis of an alkene. Practice: Draw the product and mechanism for the alcoholysis of 2-methylpropene and methanol with sulfuric acid.
a. Based on the stereochemistry of the addition of bromine to trans-cinnamic acid, write the structure of the product(s) that will form when bromine reacts with (Z)-2-hexene.
15. Provide mechanisms to explain the stereochemistry of products observed from the addition of bromine (Br2) to cis- and trans-but-2-eno. Because I know form two products from the cis isomer but only one from the trans? By What cis- or trans-but-2-eno products are not optically active?
w and the Draw the product of the addition of bromine to dimethyl fumarate below are auuntum ur promine to dimethyl maleate with correct wedge bonds and stereochemistry. In what way do these two products differ? Use your knowledge on bromine addition reactions to solve this problem. (8 points) Brz CH2Cl2 Br2 CHCI
2. Give the syn or anti addition products for the following addition reactions. Show appropriate stereochemistry if necessary to get the full credits. (5 points total) Н2/Pt 1 point Br2 1 point 1. BH3 2. H.О2/КОН 1.5 points 1.5 points Br2/H20