Finish the following reaction, assume anti addition,
and is this a stereoselective reaction? Why?
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Finish the following reaction, assume anti addition, and is this a stereoselective reaction? Why? H CH3...
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What is a stereoselective reaction? What is a chiral center? What are R and S? What physical property allows us to distinguish between diastereomers but not enantiomers? What are syn and anti addition? How do they add? What product results from each? Provide the R and S configurations for both possible products. What is the addition that is most likely to occur? Why?
20) Provide the major organic product of the following reaction. HONCH, H (cat.) = N-ch3 + POPH3 21) Draw a mechanism for the following reaction. H.CO OCHH , CH,OH
2. Is the following reaction stereospecific, stereoselective, or both (1 pt)? Me BH3; H,02 ОН Me Me Me Me
Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above
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) H2/Pt 1 point Br2 1 point 1. BH3 2. H2O2/KOH 1.5 points D Br2/H2O Brytzo 1.5 points
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
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) Hz/Pt D HPA 1 point Br2 1 point 1. BH3 2. H2O2/KOH 1.5 points D 2. POKOH Brito Br2/H20 1.5 points
Complete the following with the correct products, label Zaitsev and Hofmann, and explain why the reaction is either regioselective or stereoselective. (6 pts.) D -Br Nahi Complete each of the following reactions by adding the starting material, reaction conditions, or all possible product(s) - label major/minor - Sx2. Sx1, E2 or E1. (33 pts.) (CH3),COK DMF C(CH3) NaOH DMSO CH OH heat Ph H+Br NaOCH, H+CHE Ph DMF SK DMF o (only product)
JUDIT- %3B%20hilename%2A%3C 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) H/Pt 1 point Br2 1 point D 2. BLOKOH 1. BH3 2. H2O2/KOH 1.5 points o Broltzo Brz/H20 1.5 points
Which of the following addition reactions are anti additions (lead to trans products)? (a) Br2 addition to an alkene (b) Catalytic hydrogenation of an alkene. (c) HBr addition to an alkene (d) OsO4 addition to alkene (e) All of the above Which of the following addition reactions are stereospecific? (a) Cl2 addition to a disubstituted alkene (b) HBr addition to a trisubstituted alkene (c) Radical addition of Cl2 to CH4 (d) Oxidation of a trisubstituted alkenes by using 03, Zn...