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During elimination antiperiplanar position of proton and leaving group should be present.
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In the dehydrohalogenation of 2-bromobutane, which conformation below leads directly to the formation of trans-2-butene...
answer both parts. please dont touch if youre not going to complete it. do it asap....
answer both parts. please dont touch if youre not going to complete
it. do it asap.
part 1:
part 2:
1. a) In the dehydrohalogenation of 2-bromobutane, which conformation below leads directly to the formation of cis-2-butene? CH CH3 HC Br CH H - b) Using proper curved-arrow notation, write a mechanism for the formation of the cis-2- butene when NaOCH2CH3/EtOH was used. 3. The conversion of 2-cyclohexyl-2-propanol to 2-chloro-2-phenylpropane is an example of an Syl reaction. The alcohol is...
Consider a typical Sgi pathway involving the reaction of 2-bromo-2-methylpropane with hydroxide as shown below. CH...
Consider a typical Sgi pathway involving the reaction of 2-bromo-2-methylpropane with hydroxide as shown below. CH HC-C-Br -NaOH Syl CH; A reaction energy diagram for this reaction is provided below. What intermediate from the list below is present at position (2) on this diagram? G (1) (5) Reaction Coordinate CH; CH; CH; НО С-.--В сох с — Br HẠC CH А HẠC CHỦ B HỌC CHỦ с CH, CH; CH; НО- НО. -cs Н;С сн; Н;С сн D HẠC CHỜ...
(a) The bromohydrins produced by exposure of cis-2-butene to bromine water have two chirality centers and no symmetry,...
(a) The bromohydrins produced by exposure of cis-2-butene to bromine water have two chirality centers and no symmetry, so can exist as four configurational isomers (RR, SS, RS, and SR). Just two of these four possible isomers (the enantiomeric RR/SS pair) are in fact produced, as shown below: н, „Н Вг, в н н Во C-C...H CH, H2OH-S3 + HCA - Ho's s cH, HE R ROH Write a curved arrow mechanism, including a cyclic bromonium ion intermediate, that accounts...
9) Circle the correct answer for each of the questions below. e. Which reacts faster in...
9) Circle the correct answer for each of the questions below. e. Which reacts faster in an Syl reaction? a. Which reacts faster in an Sy2 reaction? CHs CH, CH,CHCHCH, or CH,CH,CCHy Br Br Br b. Which reacts faster in an El reaction? d. Which reacts faster in an E2 reaction? Br Br 10)2-bromobutane will react with OCH, in the present of dimethylsulfoxide, DMSO, as a solvent to create 1-butene and 2-butene by an elimination reaction A) Write the chemical...
C= C HC c= нен н сн, cis-2-butene irans-2-butene 3. The half-life (t1) of the catalyzed...
C= C HC c= нен н сн, cis-2-butene irans-2-butene 3. The half-life (t1) of the catalyzed isomerization of cis-2-butene gas to produce trans-2-butene gas, represented above, was measured under various conditions, as shown in the table below. Trial Number Initial Peis-2-bultene (torr) VL T (K) 112 (5) 300. 2.00 350. 100. 2 600 2.00 350. 100. 4.00 350. 100. 300. 2.00 365 50. 300. a. The reaction is first order. Explain how the data in the table are consistent with...
І. 7. Indicate which compound of the ones listed below would be expected to have the...
І. 7. Indicate which compound of the ones listed below would be expected to have the highest boiling point. САз сенсіз С САз н с аlѕ аѕ Слс - Сн, си, 8. Draw the 2 chair conformations of cis-1,3 dimethylcyclohexane. Ina stable. Cyclohexane. Indicate which is the most 9. Which energy diagram below indicates a 1 step reaction that is exothermic? 10. Which carbocation below is the most stable? Ca CH₂2 .CHCH e the product or products that would be...
When the 2,7-dimethyl-4-octyne is treated with 2 moles (excess) HBr, the product(s) of the reaction is:...
When the 2,7-dimethyl-4-octyne is treated with 2 moles (excess) HBr, the product(s) of the reaction is: CH-CH-CH-CH-CH-CH-CH-CH, B. CH3-CH-CH CH -CH2-CH-CH-CH; C CH-CH-CH2-C-CH3-CH-CH-CH н D. A mixture of a and b would be produced. A mixture of a, b, and e would be produced OB 0 0 0 Which of the following is the correct structure for 4-sec-butyl-1-heptyne? D. none of these OD What is the major organic product obtained from the following reaction? OH M CH,CH-CH-CH2=CH- 3 OH •...
Which of the following is the most stable chair conformation of cis-1-ethyl-2- methylcyclohexane? А а Bb...
Which of the following is the most stable chair conformation of cis-1-ethyl-2- methylcyclohexane? А а Bb c C E e CH2CH3 CHE CH,CHE H3CHC 1 CH₂ HEC a b CH CH2CH3 CH3 -CH,CHE Which of the following are isomers of the compound shown in the box? Select all that apply. Select all that apply A a Bb с с D d E e Х of Oo Submit
Which of the following correctly reflects relative stabilities of carbocations? 3 degree allylic > 2 degree...
Which of the following correctly reflects relative stabilities of carbocations? 3 degree allylic > 2 degree > 1 degree benzylic methyl > 2 degree benzylic > 3 degree 3 degree benzylic > vinyl >1 degree 2 degree allylic > 2 degree > vinyl 1 degree benzylic > 3 degree > 3 degree allylic Dehydrohalogenation of 2-bromobutane in the presence of a strong base proceeds via which of the following mechanistic pathways? S_N1 S_N2 E1 E2 none of the above Which...
21) Dehydration of 1-butanol with concentrated sulfuric acid at 140°C results in the formation of mainly trans-2-bu...
21) Dehydration of 1-butanol with concentrated sulfuric acid at 140°C results in the formation of mainly trans-2-butene. According to these results, which of the following conclusions might be valid? A) The reaction undergoes an E2-type elimination mechanism. B) The reaction follows a new mechanism involving the formation of a carbanion intermediate. C) The reaction undergoes an El-type elimination mechanism in conjunction with a hydride shift. D) The reaction undergoes an E2-type elimination mechanism in conjunction with a methyl shift. E)...
answer both parts. please dont touch if youre not going to complete
it. do it asap.
part 1:
part 2:
1. a) In the dehydrohalogenation of 2-bromobutane, which conformation below leads directly to the formation of cis-2-butene? CH CH3 HC Br CH H - b) Using proper curved-arrow notation, write a mechanism for the formation of the cis-2- butene when NaOCH2CH3/EtOH was used. 3. The conversion of 2-cyclohexyl-2-propanol to 2-chloro-2-phenylpropane is an example of an Syl reaction. The alcohol is...
Consider a typical Sgi pathway involving the reaction of 2-bromo-2-methylpropane with hydroxide as shown below. CH HC-C-Br -NaOH Syl CH; A reaction energy diagram for this reaction is provided below. What intermediate from the list below is present at position (2) on this diagram? G (1) (5) Reaction Coordinate CH; CH; CH; НО С-.--В сох с — Br HẠC CH А HẠC CHỦ B HỌC CHỦ с CH, CH; CH; НО- НО. -cs Н;С сн; Н;С сн D HẠC CHỜ...
(a) The bromohydrins produced by exposure of cis-2-butene to bromine water have two chirality centers and no symmetry, so can exist as four configurational isomers (RR, SS, RS, and SR). Just two of these four possible isomers (the enantiomeric RR/SS pair) are in fact produced, as shown below: н, „Н Вг, в н н Во C-C...H CH, H2OH-S3 + HCA - Ho's s cH, HE R ROH Write a curved arrow mechanism, including a cyclic bromonium ion intermediate, that accounts...
9) Circle the correct answer for each of the questions below. e. Which reacts faster in an Syl reaction? a. Which reacts faster in an Sy2 reaction? CHs CH, CH,CHCHCH, or CH,CH,CCHy Br Br Br b. Which reacts faster in an El reaction? d. Which reacts faster in an E2 reaction? Br Br 10)2-bromobutane will react with OCH, in the present of dimethylsulfoxide, DMSO, as a solvent to create 1-butene and 2-butene by an elimination reaction A) Write the chemical...
C= C HC c= нен н сн, cis-2-butene irans-2-butene 3. The half-life (t1) of the catalyzed isomerization of cis-2-butene gas to produce trans-2-butene gas, represented above, was measured under various conditions, as shown in the table below. Trial Number Initial Peis-2-bultene (torr) VL T (K) 112 (5) 300. 2.00 350. 100. 2 600 2.00 350. 100. 4.00 350. 100. 300. 2.00 365 50. 300. a. The reaction is first order. Explain how the data in the table are consistent with...
І. 7. Indicate which compound of the ones listed below would be expected to have the highest boiling point. САз сенсіз С САз н с аlѕ аѕ Слс - Сн, си, 8. Draw the 2 chair conformations of cis-1,3 dimethylcyclohexane. Ina stable. Cyclohexane. Indicate which is the most 9. Which energy diagram below indicates a 1 step reaction that is exothermic? 10. Which carbocation below is the most stable? Ca CH₂2 .CHCH e the product or products that would be...
When the 2,7-dimethyl-4-octyne is treated with 2 moles (excess) HBr, the product(s) of the reaction is: CH-CH-CH-CH-CH-CH-CH-CH, B. CH3-CH-CH CH -CH2-CH-CH-CH; C CH-CH-CH2-C-CH3-CH-CH-CH н D. A mixture of a and b would be produced. A mixture of a, b, and e would be produced OB 0 0 0 Which of the following is the correct structure for 4-sec-butyl-1-heptyne? D. none of these OD What is the major organic product obtained from the following reaction? OH M CH,CH-CH-CH2=CH- 3 OH •...
Which of the following is the most stable chair conformation of cis-1-ethyl-2- methylcyclohexane? А а Bb c C E e CH2CH3 CHE CH,CHE H3CHC 1 CH₂ HEC a b CH CH2CH3 CH3 -CH,CHE Which of the following are isomers of the compound shown in the box? Select all that apply. Select all that apply A a Bb с с D d E e Х of Oo Submit
Which of the following correctly reflects relative stabilities of carbocations? 3 degree allylic > 2 degree > 1 degree benzylic methyl > 2 degree benzylic > 3 degree 3 degree benzylic > vinyl >1 degree 2 degree allylic > 2 degree > vinyl 1 degree benzylic > 3 degree > 3 degree allylic Dehydrohalogenation of 2-bromobutane in the presence of a strong base proceeds via which of the following mechanistic pathways? S_N1 S_N2 E1 E2 none of the above Which...
21) Dehydration of 1-butanol with concentrated sulfuric acid at 140°C results in the formation of mainly trans-2-butene. According to these results, which of the following conclusions might be valid? A) The reaction undergoes an E2-type elimination mechanism. B) The reaction follows a new mechanism involving the formation of a carbanion intermediate. C) The reaction undergoes an El-type elimination mechanism in conjunction with a hydride shift. D) The reaction undergoes an E2-type elimination mechanism in conjunction with a methyl shift. E)...
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