Homework Answers
Ans 20 :
SN1 reactions are nucleophilic substitution unimolecular reactions that occur in two steps.
The first step is a slow step that is rate determining step and observes the formation of a carbocation intermediate. The rate of reaction depends on the stability of this carbocation so the tertiary carbocations are preferred over secondary ones and secondary ones over primary.
So here the molecules in the order of their reactivity :
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20. Arrange the following molecules based on their reactivity for SN1 mechanism (the most reactive to...
6. Rank the following alkyl halides based on the increasing reactivity for El reaction the least...
6. Rank the following alkyl halides based on the increasing reactivity for El reaction the least reactive to the most reactive) [2Pts] 7. Identify the product of the reaction between (R)-2-bromobutane and water. [2Pts] a. (S)-2-bromobutane b. [R]-2-bromobutane c. (S)-2-bromobutanol d. (R)-2-bromobutanol e. [R.S)-2-bromobutane f. [RS]-2-bromobutanol 8. Considering the Sx1, S2, E1, and E2 mechanisms, the energy diagram shown below corresponds to _ [2Pts] energy a. only the Sp1 mechanism b. only the E1 mechanism c. both the Sp1 and...
1. Arrange the following alkyl halide electrophiles with respect to Sn2 reactivity (least reactive → most...
1. Arrange the following alkyl halide electrophiles with respect to Sn2 reactivity (least reactive → most reactive). Explain D-ci +ci ~ Α 2. Which compound in each of the following pairs will react faster in an SN2 reaction with HO-. Briefly provide your reasoning to support your answer a) CH3Br or CH31 b) CH3CH2l in ethanol or dimethyl sulfoxide c) (CH3)3CCI or CH3CI 3. Each of the following molecules contain two halogens of different kinds. In each case, determine which...
Arrange the alkyl halides in order of reactivity (from most to least reactive) under both SN1 (silver nitrate/ethanol)...
Arrange the alkyl halides in order of reactivity (from most to least reactive) under both SN1 (silver nitrate/ethanol) and SN2 (sodium iodide/acetone) conditions: 1-bromobutane, 2-bromobutane, bromocyclohexane, 2-bromo-2-methylpropane, 1-bromoadamantane, benzyl bromide, and bromobrmzene.
нс Br СН,ОН HC CH a. Write the rate law for this reaction. How does this...
нс Br СН,ОН HC CH a. Write the rate law for this reaction. How does this compare to the rate law for an SN1 reaction? b. Do you think that both E1 and Sn1 reactions will have similar reaction energy diagrams? Why or why not? 2. Show the mechanism and product or products for an E2 reaction. (Mechanism 9.5 in your text walks you through this example). -CH3 + Hope НАС Сн, CH,CH-OH Br a. What is the rate law...
Predict the most likely reaction mechanism (SN1, SN2, E1, E2) and draw all products. Nato=CH₂ E2 ran Br major 2. Dr...
Predict the most likely reaction mechanism (SN1, SN2, E1, E2) and draw all products. Nato=CH₂ E2 ran Br major 2. Draw complete mechanism with arrows for the SN1/E1 mechanism. Check for carbocation rearrangements. CH3 SMI 애 + H₂O7
please indicate stereochemistry (20 marks) 1. Identify each of the following reactions as SN1, SN2, E1,...
please indicate stereochemistry
(20 marks) 1. Identify each of the following reactions as SN1, SN2, E1, or E2 and give the products formed in each case, and indicate the stereochemistry of the product if appropriate (mechanisms are not required). If no reaction would occur, indicate this with N.R. forno reaction" and give the reason for which you don't expect a product. a) E HEC-CH2-C...Br (CH3),C07 (CH3),COH CHE 70°C CH3 SN2 Morand SN2 H H₃C-CH2-c...Br. CN/DMSO in CH 25°C d) Br...
1. Assign the correct mechanism for the process that will predominantly take place in the reactions A-F shown. Your thre...
1. Assign the correct mechanism for the process that will
predominantly take place in the reactions A-F shown. Your three
choices are: SN2 or E2 or (SN1+E1) Hint: As practice for the exam,
make sure that you can CONFIDENTLY draw the structures of all the
products formed in these reactions by the predominant mechanisms
that you select! a) A: SN2; B: E2; C: SN1+E1; D: E2; E: SN2; F:
SN1+E1 b) A: E2; B: SN2; C: E2; D: SN2; E:...
identify (SN1,SN2, E1 or E2), write the product and reactive, also the mecanism Mecanismo Reacción Sna...
identify (SN1,SN2, E1 or E2), write the product and
reactive, also the mecanism
Mecanismo Reacción Sna Н.сн.с. Н,С Br H3CH2C. он Her CH3 Hас "Cн, 2. CH -Br CHs OCH3 ON 1 3. LOCH CHeOH E O 4. HI (xs) CH3 X CH3OH H2SO4 6 -Grupo sadasnt Br NaCN SNO DMF Ederes 7. Nal acetona 8. CH, снон
please show all steps including each mechanism (arrows) and also if SN1 has any rearrangements of...
please show all steps including each mechanism (arrows) and
also if SN1 has any rearrangements of carbocation intermediate
through a hydride shift and/or methyl shift. DO NOT NEED
ELIMINATION. ONLY SUBSTITUTION.
Sy1/E1 versus S2/E2 Learning Checks Draw the major organic substitution and/or elimination products in the following reactions. If no reaction is possible, write “No Reaction". Substitution Product(s) Elimination Product(s) 2) 2) OH BrCH K* -Ot-Bu NaOCH н"Сн, сн,он нсн, Ph NaOCH Br H CH3OH CH NaOCH NaOH T.CH, I...
30. Late papers not accepted. Work Independently. 1. Predict the most likely reaction mechanism (SN1, SN2,...
30. Late papers not accepted. Work Independently. 1. Predict the most likely reaction mechanism (SN1, SN2, E1, E2) and draw all products. CH₂ Na O=CH₂ Hic Br 2 Draw complete mechanism with arrows for the SNI/E1 mechanism. Check for carbocation rearrangements CH3 + H2O 3. Which is the major product for the following reaction? Y CH + NaOH CH HO HO H₃ CH₂ H₃ HOCH CH₂ H₃ CHE CH₂ CH₂ CH3 CH 4. Name the following including the R/S, E/Z...
6. Rank the following alkyl halides based on the increasing reactivity for El reaction the least reactive to the most reactive) [2Pts] 7. Identify the product of the reaction between (R)-2-bromobutane and water. [2Pts] a. (S)-2-bromobutane b. [R]-2-bromobutane c. (S)-2-bromobutanol d. (R)-2-bromobutanol e. [R.S)-2-bromobutane f. [RS]-2-bromobutanol 8. Considering the Sx1, S2, E1, and E2 mechanisms, the energy diagram shown below corresponds to _ [2Pts] energy a. only the Sp1 mechanism b. only the E1 mechanism c. both the Sp1 and...
1. Arrange the following alkyl halide electrophiles with respect to Sn2 reactivity (least reactive → most reactive). Explain D-ci +ci ~ Α 2. Which compound in each of the following pairs will react faster in an SN2 reaction with HO-. Briefly provide your reasoning to support your answer a) CH3Br or CH31 b) CH3CH2l in ethanol or dimethyl sulfoxide c) (CH3)3CCI or CH3CI 3. Each of the following molecules contain two halogens of different kinds. In each case, determine which...
нс Br СН,ОН HC CH a. Write the rate law for this reaction. How does this compare to the rate law for an SN1 reaction? b. Do you think that both E1 and Sn1 reactions will have similar reaction energy diagrams? Why or why not? 2. Show the mechanism and product or products for an E2 reaction. (Mechanism 9.5 in your text walks you through this example). -CH3 + Hope НАС Сн, CH,CH-OH Br a. What is the rate law...
Predict the most likely reaction mechanism (SN1, SN2, E1, E2) and draw all products. Nato=CH₂ E2 ran Br major 2. Draw complete mechanism with arrows for the SN1/E1 mechanism. Check for carbocation rearrangements. CH3 SMI 애 + H₂O7
please indicate stereochemistry
(20 marks) 1. Identify each of the following reactions as SN1, SN2, E1, or E2 and give the products formed in each case, and indicate the stereochemistry of the product if appropriate (mechanisms are not required). If no reaction would occur, indicate this with N.R. forno reaction" and give the reason for which you don't expect a product. a) E HEC-CH2-C...Br (CH3),C07 (CH3),COH CHE 70°C CH3 SN2 Morand SN2 H H₃C-CH2-c...Br. CN/DMSO in CH 25°C d) Br...
1. Assign the correct mechanism for the process that will
predominantly take place in the reactions A-F shown. Your three
choices are: SN2 or E2 or (SN1+E1) Hint: As practice for the exam,
make sure that you can CONFIDENTLY draw the structures of all the
products formed in these reactions by the predominant mechanisms
that you select! a) A: SN2; B: E2; C: SN1+E1; D: E2; E: SN2; F:
SN1+E1 b) A: E2; B: SN2; C: E2; D: SN2; E:...
identify (SN1,SN2, E1 or E2), write the product and
reactive, also the mecanism
Mecanismo Reacción Sna Н.сн.с. Н,С Br H3CH2C. он Her CH3 Hас "Cн, 2. CH -Br CHs OCH3 ON 1 3. LOCH CHeOH E O 4. HI (xs) CH3 X CH3OH H2SO4 6 -Grupo sadasnt Br NaCN SNO DMF Ederes 7. Nal acetona 8. CH, снон
please show all steps including each mechanism (arrows) and
also if SN1 has any rearrangements of carbocation intermediate
through a hydride shift and/or methyl shift. DO NOT NEED
ELIMINATION. ONLY SUBSTITUTION.
Sy1/E1 versus S2/E2 Learning Checks Draw the major organic substitution and/or elimination products in the following reactions. If no reaction is possible, write “No Reaction". Substitution Product(s) Elimination Product(s) 2) 2) OH BrCH K* -Ot-Bu NaOCH н"Сн, сн,он нсн, Ph NaOCH Br H CH3OH CH NaOCH NaOH T.CH, I...
30. Late papers not accepted. Work Independently. 1. Predict the most likely reaction mechanism (SN1, SN2, E1, E2) and draw all products. CH₂ Na O=CH₂ Hic Br 2 Draw complete mechanism with arrows for the SNI/E1 mechanism. Check for carbocation rearrangements CH3 + H2O 3. Which is the major product for the following reaction? Y CH + NaOH CH HO HO H₃ CH₂ H₃ HOCH CH₂ H₃ CHE CH₂ CH₂ CH3 CH 4. Name the following including the R/S, E/Z...
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