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Draw the mechanism of the bromination reaction between trans cinnamic acid and bromine. Be sure to...
The product was 2,3-dibromo-3-phenylpropanoic acid, with a melting point of 198-200 °C . So a racemic mixture of (2R,3S) and (2S,3R). Based on your knowledge of the bromination of alkenes, did this alkene behave like other alkenes, or was the mechanism different than what you expected? (1 pt) ОН NHBrz acetic acid NHBr Br 0 OH Br 2,3-dibromo-3- phenylpropanoic acid pyridinium bromide trans cinnamic acid pyridinium bromide perbromide
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...
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...
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.
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.
Hello, I am reviewing my chemistry problems and need someone to draw me the structure + stereochemistry of the following: 1. (2R,3S) and (2S,3R) erythro-2,3-dibromo-3-phenylpropanoic acid 2. 2R, 3R) and (2S, 3S) threo-2,3-dibromo-3phenylpropanoic acid 3. Structure and stereochemistry of a mixture of both eryhtro and threo-2,3-dibromo-3phenylpropanoic acid Please include all mechanisms that show how you obtain the different stereoisomer! (please show the stereochemical outcome of a brominum ion intermediate versus a carbocation intermediate versus a four atoms concerted transition state)
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.
another answer is the amount of trans cinnamoc acid was insuficient Reaction progress of bromine addition to trans-cinnamic acid can be monitored by testing samples from reaction mixture over specific periods of times with TLC plates as shown by the attached picture. How can you explain your results if you only obtained spot (b) at the end of reaction? a) b) c) a) cinnamic acid b) cinnamic acid and product c) Product the applied eluent in the TLC test was...