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4. For an attempted E2 reaction using hot aqueous sodium hydroxide: which alkyl bromide substrate would...
A student attempted to carry out a substitution reaction using molecule as the substrate. The resulting...
A student attempted to carry out a substitution reaction using molecule as the substrate. The resulting product was molecule. Which nucleophilic substitution occurred --- S_N1 or S_N2 How can you tell The molecule here cannot be used as a substrate for an E2 reaction, but can be for an E1 reaction. Explain why. Be specific --- explain why an E2 reaction cannot occur and how an E1 reaction could occur. Where does the nucleophile attack in an S_N2 reaction Backside...
Which of the following alkyl halides would be the least reactive substrate in a Williamson ether...
Which of the following alkyl halides would be the least reactive
substrate in a Williamson ether synthesis (reaction with NaOEt ;
sodium
alkoxides to form ethers)?
Which of the following alkyl halides would be the least reactive substrate in a Williamson ether synthesis (reaction with NaOEt ; sodium alkoxides to form ethers)? C) CH3CH(CH3)CH3 B) CH3CHCHZ A) CH3CH Br Br D) CHCHCHCHC D) CH3CH2CHCH2CH3 E) CHCI Hai
Which of the following alkyl bromides would undergo a relatively fast E2-type elimination reaction? Br Br...
Which of the following alkyl bromides would undergo a relatively fast E2-type elimination reaction? Br Br A) B) C) D) oc "A dd Br Br А с
c. The reaction of triphenylphosphine with an alkyl halide is a bimolecular nucleophilic substitution (SN2) reaction...
c. The reaction of triphenylphosphine with an alkyl halide is a
bimolecular nucleophilic substitution (SN2) reaction in which
triphenylphosphine is the nucleophile and the alkyl halide is
theelectrophile. Is triphenylphosphine acting like a Lewis acid,
Lewis base, Bronsted-Lowry acid, orBronsted-Lowry base? How would
you characterize the behavior of the alkyl halide?
d. In the lab, you will make your ylide by reacting
benzyltriphenylphosphonium bromide with sodium hydroxide. How would
you characterize this reaction?
e. Is the ylide that you form...
Consider the SN2 reaction of butyl bromide with hydroxide ion , Assuming no other changes, what...
Consider the SN2 reaction of butyl bromide with hydroxide ion , Assuming no other changes, what effect on the reaction rate would result from simultaneously doubling the concentrations of both butyl bromide and hydroxyl ion No effect (B)It would double the rate (C)it would increase the rate six times (D) It would increase the rate four times. 2. Which alky halide would you expect to undergo SN1 hydrolysis most rapidly? (A) (CH3)3C-I (B) (CH3)3C-Br (C) (CH3)3C-Cl (D) (CH3)3C-F 3....
Which of the following alkyl bromides would undergo a relatively fast E2-type elimination reaction? Br Br...
Which of the following alkyl bromides would undergo a relatively fast E2-type elimination reaction? Br Br A) B) C) D) Br odov Br A B D
4. The chloroalkane Q can be hydrolysed by reaction with aqueous sodium hydroxide to give tertiary...
4. The chloroalkane Q can be hydrolysed by reaction with aqueous sodium hydroxide to give tertiary alcohol R. NaOH Hot Q R (a) Give the systematic IUPAC name for tertiary alcohol R. [1 mark] (b) What is the name of the mechanism that this reaction proceeds by? [1 mark] (c) Explain what is meant by the term order of reaction, and, based on your answer to (b), assign orders of reaction to chloroalkane Q and sodium hydroxide in this hydrolysis...
For letters h & i : For each of the following reactions, predict the major mechanistic pathway (SN1/SN2/E1/E2...
For
letters h & i :
For each of the following reactions, predict the major
mechanistic pathway (SN1/SN2/E1/E2) and the major organic
products
1. (cont.) (h) НСОН CHB -CHBr HCOH - (0) CH,CH,CH,CH,Br- NH 2. For each of the following indicate which reaction will occur faster. Explain your reasoning. (No credit will be given for guesses) (a) The reaction of (CH),CBr with 0.001M aqueous NaOH or 0.10M aqueous NaOH (b) The reaction of 2-bromobutane with NaOH in DMSO or NaSH...
4. Give the mechanistic symbol(s) (SNI. SN2, E1, E2) that is most consistent with each of the following stateme...
4. Give the mechanistic symbol(s) (SNI. SN2, E1, E2) that is most consistent with each of the following statements. a. Methyl halides react with sodium cthoxide in ethanol only by this mechanism. b. Alkyl iodides react faster than alkyl bromides in reactions that proceed by these mechanisms. c. Results in the largest amount of racemization of an optically active alkyl halide. d. These reaction mechanisms are the ones mostly likely to have been involved when the products are found to...
CH3 (4) 1. Which of the following alkyl halides would you expect to be most reactive...
CH3 (4) 1. Which of the following alkyl halides would you expect to be most reactive in a unimolecular reaction? a) C&H, CH, CH, CH, BY b) CH 1 CH CH Br C) CH11CCH, Br d) C6H CH2 CH CHỊ CHỊ CH3 CHỊ e) C&H, CCH Br CHE (4) 2. What would you expect to be the chief organic product(s) when tert-butyl bromide reacts with sodium acetylide, i.e., CH3 + - CH2-C-Br + Na :CECH — ? CH a) I...
A student attempted to carry out a substitution reaction using molecule as the substrate. The resulting product was molecule. Which nucleophilic substitution occurred --- S_N1 or S_N2 How can you tell The molecule here cannot be used as a substrate for an E2 reaction, but can be for an E1 reaction. Explain why. Be specific --- explain why an E2 reaction cannot occur and how an E1 reaction could occur. Where does the nucleophile attack in an S_N2 reaction Backside...
Which of the following alkyl halides would be the least reactive
substrate in a Williamson ether synthesis (reaction with NaOEt ;
sodium
alkoxides to form ethers)?
Which of the following alkyl halides would be the least reactive substrate in a Williamson ether synthesis (reaction with NaOEt ; sodium alkoxides to form ethers)? C) CH3CH(CH3)CH3 B) CH3CHCHZ A) CH3CH Br Br D) CHCHCHCHC D) CH3CH2CHCH2CH3 E) CHCI Hai
Which of the following alkyl bromides would undergo a relatively fast E2-type elimination reaction? Br Br A) B) C) D) oc "A dd Br Br А с
c. The reaction of triphenylphosphine with an alkyl halide is a
bimolecular nucleophilic substitution (SN2) reaction in which
triphenylphosphine is the nucleophile and the alkyl halide is
theelectrophile. Is triphenylphosphine acting like a Lewis acid,
Lewis base, Bronsted-Lowry acid, orBronsted-Lowry base? How would
you characterize the behavior of the alkyl halide?
d. In the lab, you will make your ylide by reacting
benzyltriphenylphosphonium bromide with sodium hydroxide. How would
you characterize this reaction?
e. Is the ylide that you form...
Which of the following alkyl bromides would undergo a relatively fast E2-type elimination reaction? Br Br A) B) C) D) Br odov Br A B D
4. The chloroalkane Q can be hydrolysed by reaction with aqueous sodium hydroxide to give tertiary alcohol R. NaOH Hot Q R (a) Give the systematic IUPAC name for tertiary alcohol R. [1 mark] (b) What is the name of the mechanism that this reaction proceeds by? [1 mark] (c) Explain what is meant by the term order of reaction, and, based on your answer to (b), assign orders of reaction to chloroalkane Q and sodium hydroxide in this hydrolysis...
For
letters h & i :
For each of the following reactions, predict the major
mechanistic pathway (SN1/SN2/E1/E2) and the major organic
products
1. (cont.) (h) НСОН CHB -CHBr HCOH - (0) CH,CH,CH,CH,Br- NH 2. For each of the following indicate which reaction will occur faster. Explain your reasoning. (No credit will be given for guesses) (a) The reaction of (CH),CBr with 0.001M aqueous NaOH or 0.10M aqueous NaOH (b) The reaction of 2-bromobutane with NaOH in DMSO or NaSH...
4. Give the mechanistic symbol(s) (SNI. SN2, E1, E2) that is most consistent with each of the following statements. a. Methyl halides react with sodium cthoxide in ethanol only by this mechanism. b. Alkyl iodides react faster than alkyl bromides in reactions that proceed by these mechanisms. c. Results in the largest amount of racemization of an optically active alkyl halide. d. These reaction mechanisms are the ones mostly likely to have been involved when the products are found to...
CH3 (4) 1. Which of the following alkyl halides would you expect to be most reactive in a unimolecular reaction? a) C&H, CH, CH, CH, BY b) CH 1 CH CH Br C) CH11CCH, Br d) C6H CH2 CH CHỊ CHỊ CH3 CHỊ e) C&H, CCH Br CHE (4) 2. What would you expect to be the chief organic product(s) when tert-butyl bromide reacts with sodium acetylide, i.e., CH3 + - CH2-C-Br + Na :CECH — ? CH a) I...
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