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Substitution and Elimination practice problems Analyze the reactant(s) and reaction conditions, then predict the structure of...
Substitution and Elimination practice problems Analyze the reactant(s) and reaction conditions, then predict the st...
Substitution and Elimination practice problems Analyze the reactant(s) and reaction conditions, then predict the structure of the major organic product and indicate the predominant mechanism (Syl, SN2, El. or E2) of each reaction. къс(Снь. CH CH CH CH Br (сн),сон, 82с масн, CH3CH2CH2CH Br CHOH, Pc Всньсн, DMF,0°C сны + NaNO3 5°C CH, Сн,-с-отз НО 22°C CH CHOH 22°C кос(CH))). (CH)))соң, бес CHI + CHISH 43°C - месн,CH, CH,CHAOH, 78° с Н,0 22° C AB NACH CH,OH, O°C
AI, Ule major organic 2, E1, E2) of each reaction. SNI CH2CH2CH2CH_Br to good bare K...
AI, Ule major organic 2, E1, E2) of each reaction. SNI CH2CH2CH2CH_Br to good bare K OC(CH), - sal whol, prolio (CH3),COH, 82°C Nå SCH СН,ОН, 0°C Cty (Itz (It=CH₂ CH3CH2CH2CH BE E, NE, a Na SCH.CH DMF,0°C EM CHI - NaNO2 so (H ₃ NO₂ + Ina Na withy CH; CH3-C-OTS H2O 22°C ESNIE CH CH,OH 22°C E, SNIE K%C(CH3) (CH3),COH, 82°C SNELE 43° C CHI + CHSH Methyl SNr Na CH.CH SN, CH CH2OH, 78°C W E SNE...
Chem 3441 Substitution and Elimination Practice Determine the products and indicate the type of reaction o...
Chem 3441 Substitution and Elimination Practice Determine the products and indicate the type of reaction o KOC(CH) (CH3)2COH 80°C Na SCHCHE Na SCH.CH DMF, rt O the CH3OH
In part C, will the hydroxide ion first react with the hydrogen on the central carbon...
In part C, will the hydroxide ion first react with the
hydrogen on the central carbon through E2 and form a carbocation?
If so, does the carbocation then react with the ethanol in solution
through an E1 mechanism? Please write the complete mechanism.
processes 40. Write the products of the following elimination reactions. Specity the predominant mechanism (El or E2) and formulate it in detail NaNH2, NH3 (a) (CH2CH2),CBr KOC(CH3)3, (CH3)3 COH (b) CH2CH2CH2CH2CI Excess KOH, CH,CH,OH CH (c) Br...
3. Shown below are a series of reactions. Predict the major product for each of them....
3. Shown below are a series of reactions. Predict the major product for each of them. Remember, you will need to first decide whether the reaction occurs by an SN2, SN1, E2, or E1 before you can determine what the product will be. Label each as SN2, SN1, E2, or E1. Hint: First decide whether S2/E2 or S1/E1 is favored, and then decide whether the reaction pathway goes by a substitution or elimination reaction. SN2 / SN1 E2/E1 Na DMSO,rt...
PROBLEM 7-25 For each reaction, decide whether substitution or elimination (or both) is possible, and predict...
PROBLEM 7-25 For each reaction, decide whether substitution or elimination (or both) is possible, and predict the products you expect. Label the major products. (a) 1-bromo-1-methylcyclohexane + NaOH in acetone (b) 1-bromo-1-methylcyclohexane + triethylamine (EtN:) (c) chlorocyclohexane + NaOCH, in CH, OH (d) chlorocyclohexane + NaOC(CH3)3 in (CH3)3 COH
09 Which is the major product of the following substitution reaction? CH₂CH₂OH NaBr ? A) CH₃...
09 Which is the major product of the following substitution reaction? CH₂CH₂OH NaBr ? A) CH₃ CH₂ Br D) All of the Above B) CH₃ CH₂ Na E) None of the Above c) CH₂-E-H 20 Which is the major product of the following sultitution reaction? CH₃ CH-CH-CH2 HBr ? OH CH₂ C) CH C=CH-CH₂ A) CH₂ CH-CH=CH₂ Br CH3 Br B) CH₂ C-CH₂=CH₂ D) None of the Above 2 Which is the major product of the following reaction? CH3 PBra...
Which statement or set of conditions listed below is not consistent with an Syl reaction pathway?...
Which statement or set of conditions listed below is not consistent with an Syl reaction pathway? O a. Neutral nucleophile work just fine. b. The leaving group is typically the conjugate base of a strong acid. O c. The rate is not dependent upon the concentration of the nucleophile. d. The temperature is relatively "cooler" to reduce competing elimination products. e. The solvent is polar and aprotic. Of. The substrate has a leaving group that is typically on a 30,...
_1. An alkyl halide which might be expected to undergo rearrangement under Snl or E1 conditions...
_1. An alkyl halide which might be expected to undergo rearrangement under Snl or E1 conditions is: HZC Br CH3 A. 1 B. | F—CH,BH C. CH3-C-CH-CH, CHz CH3 D. CH3 CH3-C-CH2CH2-Br CH3 E. A Br 2. Your task is to convert 2-chloropentane into 1-pentene. Which reagents would you choose? a) NaOH/H20 b) KOH/CH3OH c) CH3ONa/CH3OH d) CH3CH2ONa/CH3CH2OH e) (CH3)3COK/(CH3)3COH 3. Circle the reaction below which is faster in polar protic solvents. OH,H,O A. CH,CH,CH,Br- CH,CH,CH,OH + Br or SH.RSH...
1. What substitution mechanism will the following reaction likely proceed through? (1pt) CH3 HU. : N=C:...
1. What substitution mechanism will the following reaction likely proceed through? (1pt) CH3 HU. : N=C: +3C-Br - NC-C WH + Br HT 2. Label the componetns of the above reation as: Nucleophile, electrophile, leaving group (3pt) 3. Assign R and S configuration to the following reactant and products (2pt) NaOH HO + HO-COCH3 H.COwc-OH + HO-6 H2COCCI H H 4. What ratio should the two above products be formed in and what is their stereochemical relationship? (2pt) 5. Predict...
Substitution and Elimination practice problems Analyze the reactant(s) and reaction conditions, then predict the structure of the major organic product and indicate the predominant mechanism (Syl, SN2, El. or E2) of each reaction. къс(Снь. CH CH CH CH Br (сн),сон, 82с масн, CH3CH2CH2CH Br CHOH, Pc Всньсн, DMF,0°C сны + NaNO3 5°C CH, Сн,-с-отз НО 22°C CH CHOH 22°C кос(CH))). (CH)))соң, бес CHI + CHISH 43°C - месн,CH, CH,CHAOH, 78° с Н,0 22° C AB NACH CH,OH, O°C
AI, Ule major organic 2, E1, E2) of each reaction. SNI CH2CH2CH2CH_Br to good bare K OC(CH), - sal whol, prolio (CH3),COH, 82°C Nå SCH СН,ОН, 0°C Cty (Itz (It=CH₂ CH3CH2CH2CH BE E, NE, a Na SCH.CH DMF,0°C EM CHI - NaNO2 so (H ₃ NO₂ + Ina Na withy CH; CH3-C-OTS H2O 22°C ESNIE CH CH,OH 22°C E, SNIE K%C(CH3) (CH3),COH, 82°C SNELE 43° C CHI + CHSH Methyl SNr Na CH.CH SN, CH CH2OH, 78°C W E SNE...
Chem 3441 Substitution and Elimination Practice Determine the products and indicate the type of reaction o KOC(CH) (CH3)2COH 80°C Na SCHCHE Na SCH.CH DMF, rt O the CH3OH
In part C, will the hydroxide ion first react with the
hydrogen on the central carbon through E2 and form a carbocation?
If so, does the carbocation then react with the ethanol in solution
through an E1 mechanism? Please write the complete mechanism.
processes 40. Write the products of the following elimination reactions. Specity the predominant mechanism (El or E2) and formulate it in detail NaNH2, NH3 (a) (CH2CH2),CBr KOC(CH3)3, (CH3)3 COH (b) CH2CH2CH2CH2CI Excess KOH, CH,CH,OH CH (c) Br...
3. Shown below are a series of reactions. Predict the major product for each of them. Remember, you will need to first decide whether the reaction occurs by an SN2, SN1, E2, or E1 before you can determine what the product will be. Label each as SN2, SN1, E2, or E1. Hint: First decide whether S2/E2 or S1/E1 is favored, and then decide whether the reaction pathway goes by a substitution or elimination reaction. SN2 / SN1 E2/E1 Na DMSO,rt...
PROBLEM 7-25 For each reaction, decide whether substitution or elimination (or both) is possible, and predict the products you expect. Label the major products. (a) 1-bromo-1-methylcyclohexane + NaOH in acetone (b) 1-bromo-1-methylcyclohexane + triethylamine (EtN:) (c) chlorocyclohexane + NaOCH, in CH, OH (d) chlorocyclohexane + NaOC(CH3)3 in (CH3)3 COH
09 Which is the major product of the following substitution reaction? CH₂CH₂OH NaBr ? A) CH₃ CH₂ Br D) All of the Above B) CH₃ CH₂ Na E) None of the Above c) CH₂-E-H 20 Which is the major product of the following sultitution reaction? CH₃ CH-CH-CH2 HBr ? OH CH₂ C) CH C=CH-CH₂ A) CH₂ CH-CH=CH₂ Br CH3 Br B) CH₂ C-CH₂=CH₂ D) None of the Above 2 Which is the major product of the following reaction? CH3 PBra...
Which statement or set of conditions listed below is not consistent with an Syl reaction pathway? O a. Neutral nucleophile work just fine. b. The leaving group is typically the conjugate base of a strong acid. O c. The rate is not dependent upon the concentration of the nucleophile. d. The temperature is relatively "cooler" to reduce competing elimination products. e. The solvent is polar and aprotic. Of. The substrate has a leaving group that is typically on a 30,...
_1. An alkyl halide which might be expected to undergo rearrangement under Snl or E1 conditions is: HZC Br CH3 A. 1 B. | F—CH,BH C. CH3-C-CH-CH, CHz CH3 D. CH3 CH3-C-CH2CH2-Br CH3 E. A Br 2. Your task is to convert 2-chloropentane into 1-pentene. Which reagents would you choose? a) NaOH/H20 b) KOH/CH3OH c) CH3ONa/CH3OH d) CH3CH2ONa/CH3CH2OH e) (CH3)3COK/(CH3)3COH 3. Circle the reaction below which is faster in polar protic solvents. OH,H,O A. CH,CH,CH,Br- CH,CH,CH,OH + Br or SH.RSH...
1. What substitution mechanism will the following reaction likely proceed through? (1pt) CH3 HU. : N=C: +3C-Br - NC-C WH + Br HT 2. Label the componetns of the above reation as: Nucleophile, electrophile, leaving group (3pt) 3. Assign R and S configuration to the following reactant and products (2pt) NaOH HO + HO-COCH3 H.COwc-OH + HO-6 H2COCCI H H 4. What ratio should the two above products be formed in and what is their stereochemical relationship? (2pt) 5. Predict...
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