2-bromoheptane reacts with potassium t-butoxide in t-butanol to give approx 4 products (3 E2 & 1...
2-bromoheptane reacts with potassium t-butoxide in t-butanol to give approx 4 products (3 E2 & 1 Sn2 products). Explain difference between Regio-, Chemo-, and Stereo-selectivity with this reaction?
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2-bromoheptane reacts with potassium t-butoxide in t-butanol to
give approx 4 products (3 E2 & 1...
What are the mechanisms and major/minor products when 2-Chloro-2-Methylbutane reacts with A.) Potassium Hydroxide in 1-propanol+Heat...
What are the mechanisms and major/minor products when 2-Chloro-2-Methylbutane reacts with A.) Potassium Hydroxide in 1-propanol+Heat B.)Potassium tert-butoxide in tertbutyl alcohol+heat I know they proceed via E2 reaction mechanism but need help figuring out the steps and the major and minor products. Also if you could offer a brief explanation of why the mechanism reacts the way it does I would really appreciate it. Thank you!
9. Treatment of (2R,3S)-2-chloro-3-methylpentane with potassium t-butoxide in t-butanol gives a single stereoisomer of 3-phenyl-2-butene. (15...
9. Treatment of (2R,3S)-2-chloro-3-methylpentane with potassium t-butoxide in t-butanol gives a single stereoisomer of 3-phenyl-2-butene. (15 pts) CI CH, | (CH, CƠ K, CH,CH=C-CH-CH, CHE (CH3),COH Draw the three possible Newman projections of the staggered conformations of (2R,3S)-2- chloro-3-methylpentane. Circle the one Newman projection with the conformation most suited for the elimination reaction. Conformation 2 Conformation 3 Conformation 1 Show the stereoisomer of the product expected from this elimination path.
E2 reaction of 2-bromoheptane Lab Report Form: E2 Reaction of 2-Bromoheptane Before Lab Complete the first...
E2 reaction of 2-bromoheptane
Lab Report Form: E2 Reaction of 2-Bromoheptane Before Lab Complete the first two columns of the Results table below, drawing the alkene products in order of increasing boiling point (lowest boiling point at top of table). Provide structures and names in the first column. Results Perform calculations for the relative percentages of the three alkenes on the copy of your GC graph, clearly and neatly showing your work. Area is from the GC trace. Percentages should...
1. Determine if E1 or E2 and the product formed. H₂O H2O t-butoxide DMSO OCH 3...
1. Determine if E1 or E2 and the product formed. H₂O H2O t-butoxide DMSO OCH 3 CHONa. DMSO -ochz Br CHOU CHOH OH acetic acid ОН 2. Draw all the possible products. OH
Draw the product formed by the reaction of potassium t-butoxide with (1S,2S)-1-bromo-2-methyl-1-phenylbutane (shown b...
Draw the product formed by the reaction of potassium t-butoxide
with (1S,2S)-1-bromo-2-methyl-1-phenylbutane (shown below). (Draw
the correct stereoisomer of the product.)
Draw the product formed by the reaction of potassium t-butoxide with (1S,2S)-1-bromo-2-methyl-1-phenylbutane (shown below). (Draw the correct stereoisomer of the product.)
1. Give the missing reagents, reactants or products for each of the following reactions. KOC(CH3)2 (E2)...
1. Give the missing reagents, reactants or products for each of the following reactions. KOC(CH3)2 (E2) 1. BH3 2. H2O2, NaOH, H2O PCC HBr/ROOR how many stereoisomers? PCC ad Excess H, H CH2Cl2 OT_HBr SN2 give one stereoisomer SN2 NaCN ACN (solvent) KMnO4 H2SO4 NaOEt (E2) mCPBA H2SO4 (cat) don't worry about this reaction ОН PCC CH2Cl2 NaOEt (E2) mCPBA H2SO4 (cat) don't worry about this reaction OH PCC CH2Cl2 HI (SN1)
3. If sodium methoxide in methanol was used in place of potassium t butanol, your GC...
3. If sodium methoxide in methanol was used in place of potassium t butanol, your GC analysis would look much more like the 2-butanol/sulfuric acid reaction products. In addition, a new, non-alkene product would be present in the GC analysis from a competing, non-elimination mechanism. Explain why the alkene distribution would change, what the new product would be, and why this new product would form. 4. If 2-bromobutane was reacted with trimethylamine to produce sec-butyl trimethyl- ammonium bromide (see below),...
What is Zaitsev’s rule? Give the mechanism for the acid-catalyzed E1 reaction of 2-butanol. Give the...
What is Zaitsev’s rule? Give the mechanism for the acid-catalyzed E1 reaction of 2-butanol. Give the mechanism for the base-catalyzed E2 reaction of 2-bromobutane. Draw all possible products. You expect three products from the elimination reaction 2-butanol. What are they? The E2 mechanism is a one-step mechanism. True or False? Explain. Which of these two alcohols would you expect to be more reactive under H3PO4/aqueous conditions? Why? Give the structure of the main product in both cases. 1-phenyl-1-propanol 1 -cyclohexyl-1-propanol...
1. What is the reaction mechanism when 2-butanol is reacted with PBr3? How do you know...
1. What is the reaction mechanism when 2-butanol is reacted with PBr3? How do you know if it is Sn1 Sn2 E1 or E2? Is there a chart or can you show me a method for this? 2. The following reaction yields how many stereoisomers? 3-hexene -(reacts with HBr)> How can you find out the number of stereoisomers
1) Give the product for the reaction of 1-butene with methanol in the presence of acid....
1)
Give the product for the reaction of 1-butene with methanol in
the presence of acid. The mechanism is the same as the mechanism
for the addition of water to alkenes.
2-ethoxybutane
1-butanol
2-methoxybutane
1-ethoxybutane
1-methoxybutane
2)
3)
Identify the best nucleophile in an SN2 reaction.
tert-butoxide ion
tert-pentoxide ion
isopropoxide ion
ethoxide ion
4)
Identify the alkyl halide that reacts the fastest in an
SN1 reaction.
2-bromopropane
2-chloropropane
2-iodopropane
2-fluoropropane
What is the major product of the following reaction?...
9. Treatment of (2R,3S)-2-chloro-3-methylpentane with potassium t-butoxide in t-butanol gives a single stereoisomer of 3-phenyl-2-butene. (15 pts) CI CH, | (CH, CƠ K, CH,CH=C-CH-CH, CHE (CH3),COH Draw the three possible Newman projections of the staggered conformations of (2R,3S)-2- chloro-3-methylpentane. Circle the one Newman projection with the conformation most suited for the elimination reaction. Conformation 2 Conformation 3 Conformation 1 Show the stereoisomer of the product expected from this elimination path.
E2 reaction of 2-bromoheptane
Lab Report Form: E2 Reaction of 2-Bromoheptane Before Lab Complete the first two columns of the Results table below, drawing the alkene products in order of increasing boiling point (lowest boiling point at top of table). Provide structures and names in the first column. Results Perform calculations for the relative percentages of the three alkenes on the copy of your GC graph, clearly and neatly showing your work. Area is from the GC trace. Percentages should...
1. Determine if E1 or E2 and the product formed. H₂O H2O t-butoxide DMSO OCH 3 CHONa. DMSO -ochz Br CHOU CHOH OH acetic acid ОН 2. Draw all the possible products. OH
Draw the product formed by the reaction of potassium t-butoxide
with (1S,2S)-1-bromo-2-methyl-1-phenylbutane (shown below). (Draw
the correct stereoisomer of the product.)
Draw the product formed by the reaction of potassium t-butoxide with (1S,2S)-1-bromo-2-methyl-1-phenylbutane (shown below). (Draw the correct stereoisomer of the product.)
1. Give the missing reagents, reactants or products for each of the following reactions. KOC(CH3)2 (E2) 1. BH3 2. H2O2, NaOH, H2O PCC HBr/ROOR how many stereoisomers? PCC ad Excess H, H CH2Cl2 OT_HBr SN2 give one stereoisomer SN2 NaCN ACN (solvent) KMnO4 H2SO4 NaOEt (E2) mCPBA H2SO4 (cat) don't worry about this reaction ОН PCC CH2Cl2 NaOEt (E2) mCPBA H2SO4 (cat) don't worry about this reaction OH PCC CH2Cl2 HI (SN1)
3. If sodium methoxide in methanol was used in place of potassium t butanol, your GC analysis would look much more like the 2-butanol/sulfuric acid reaction products. In addition, a new, non-alkene product would be present in the GC analysis from a competing, non-elimination mechanism. Explain why the alkene distribution would change, what the new product would be, and why this new product would form. 4. If 2-bromobutane was reacted with trimethylamine to produce sec-butyl trimethyl- ammonium bromide (see below),...
1)
Give the product for the reaction of 1-butene with methanol in
the presence of acid. The mechanism is the same as the mechanism
for the addition of water to alkenes.
2-ethoxybutane
1-butanol
2-methoxybutane
1-ethoxybutane
1-methoxybutane
2)
3)
Identify the best nucleophile in an SN2 reaction.
tert-butoxide ion
tert-pentoxide ion
isopropoxide ion
ethoxide ion
4)
Identify the alkyl halide that reacts the fastest in an
SN1 reaction.
2-bromopropane
2-chloropropane
2-iodopropane
2-fluoropropane
What is the major product of the following reaction?...
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