Option D
Addition of Br2 to trans alkene gives meso Compound.
Overall reaction is an example for Electrophilic Addition
The addition of bromine, Br2, to trans-2-butene gives The addition of bromine, Br2, to trans-2-butene gives A) a rac...
The addition of bromine, Br2, to trans-2-butene gives The addition of bromine, Br2, to trans-2-butene gives A) a racemic mixture of (2R,3R) and (2S,3S)-2,3-dibromobutane. B) (2S,3S)-2,3-dibromobutane. C) (2R,3R)-2,3-dibromobutane. D) meso-2,3-dibromobutane.
Draw the mechanism of the bromination reaction between trans cinnamic acid and bromine. Be sure to include stereochemistry( wedge and dashed structures). The product obtained was the racemic mixture of (2R,3S) and (2S,3R) of 2,3-dibromo-3-phenylpropanoic acid.
Is the stereochemistry of the ionic addition of bromine to trans-cinnamic acid syn or anti addition? Why? I recorded a bp of 195 C. 3-phenylpropanoic acid, a dibromide with two le; these are shown here as their Fischer projections: i C. Hg C. Hg CHE CaHs HBr BrH H Br Br- H Br- H H -Br - HBr BrH COZH COH CO2H CO2H 2S,3S 2R,3R 28,35 2S,3R Enantiomeric Pair (threo diastereomers) mp 93.5-95.0°C Enantiomeric Pair (erytho diastereomers) mp 202-204 °C...
Both the E and Z diastereomers of 2-pentene can react with bromine to from 2,3-dibromopentane. (E) Br2 arty 4 stereoisomers a. Draw the 4 possible stereoisomers of 2,3-dibromopentane. b. Using a mechanism, prove that E-2-pentene can only form the 2S, 3R and 2R, 3S stereoisomers. c. Using a mechanism, prove that Z-2-pentene can only form the 2S,3S and 2R, 3R stereoisomers.
need help on the last hw problems please explain and answer 43. An unknown compound of formula CeH16 was found to be optically active. On catalytic reduction of the unknown compound over a palladium catalyst, 2 equivalents of hydrogen were absorbed. Ozonolysis of the unknown compound gave two products: one was identified as an optically active dialdehyde of formula CsHaO2; the other compound was identified as acetaldehyde (CH3CHO). The most likely structure of the unknown compound is B. CH.CH-CH-CHECH CH...
45. What is (are) the major product(s) obtained from the following reaction? L Br2 - L (2R, 3R)-Dibromobutane (2S, 3S)-Dibromobutane (2S, 3R)-Dibromobutane Ι A) Only I B) Only II C) Only III D) Only I and II
which is a meso compound? Which is a meso compound? O A. (20.4R)-2,4-Dibromopentane O B. (2R,3R)-2,3-Dibromobutane O C. (2R.45)-2,4-Dibromopentane O D.(2R,3S)-2,3-Dibromopentane O E. (2R.45)-2,4-Dibromohexane
I need help on all of these. Any help is much appreciated! 3. The enzyme aconitase catalyzes the hydration (addition of water across the double bond) of aconitic acid to two products: citric acid and isocitric acid. Isocitric acid is optically active, citric acid is not. What are the structures of citric acid and isocitric acid? но HO Aconitic Acid 4. Compound A has the molecular formula of C:Hı2 and reacts with 2 equivalents of H2. A gives HCOCH2CH2CHO as...
10. What is (are) the major product(s) obtained from the following reaction? (2 pts) Dra. O (2R, 3R)-Dibromobutane (2S, 3S)-Dibromobutane (2S, 3R)-Dibromobutane HT A) Only I B) Only II C) Only III D) Only I and II 11. What is (are) the major product(s) obtained from the following reaction? (2 pts) (2R, 3R)-Dibromobutane (2S, 3S)-Dibromobutane (2S, 3R)-Dibromobutane M 1 A) Only I B) Only II C) Only III D) Only I and II
Which of the following statements is true about the reactivity of 2-methylbutane toward Br2/hv and Cl2/hv? (3 pts) b Reaction of cis-2-butene with bromine gives a racemic mixture of chiral products. c. Reaction of cis-2-butene with bromine gives achiral (meso) products. 8. Which of the following statements is true about the reactivity of 2-methylbutane toward Bry/hv and Cly/hv? (3 pts) a. chlorine is more selective than bromine (for halogenation at the 2- carbon as opposed to the 1-, 3-, or...