Which bond was formed in the reaction?
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Which bond was formed in the reaction?
Epoxide 1 was treated with CH3-Li in the presence...
Grignard reagents cannot be generated in the presence of an alcohol, as the acidic hydrogen will...
Grignard reagents cannot be generated in the presence of an
alcohol, as the acidic hydrogen will quench the Grignard reagent as
it is formed. Choose the appropriate protecting group, then draw
the expected intermediates (with the protecting group drawn out)
and final product in this sequence. All structures should be
neutral; omit byproducts.
Grignard reagents cannot be generated in the presence of an alcohol, as the acidic hydrogen will quench Map Grignard reagent as it is formed. Choose the appropriate...
1. Why is the expected epoxide NOT formed in the absence of a buffer? -mCPBA is...
1. Why is the expected epoxide NOT formed in the absence of a buffer? -mCPBA is not reactive without the buffer -The buffer acts as a catalyst -The buffer prevents a nucleophile from attacking the epoxide oxygen -Acidic solutions provide a reactive environment in which the epoxide oxygen is protonated and the ring is opened 2. What product is expected to form in the absence of a buffer? -4-chlorobenzoate ester -trans-anethole oxide -only entropy knows -3-chlorobenzoate ester
Draw the product formed when 1-bromobutane is treated with cach reagent. 1. Li (2 equiv) 2....
Draw the product formed when 1-bromobutane is treated with cach reagent. 1. Li (2 equiv) 2. Mg in (CHCH2):0 solvent 3. Li (2 equiv), then Cul (0.5 equiv) 4. The answer in (a), then H;O 5. The answer in (b), then D20 6. The answer in (a), then CH,CCH Draw the product formed when (CH3CH2CH2CH2) CuLi is treated with each compound. In so cases, no reaction occurs. CHн, ,then H,O Draw the product formed when the a.ß-unsaturated ketone A is...
1. The reaction web includes most of the reactions of enolates we have studied. The products...
1. The reaction web includes most of the reactions of enolates we have studied. The products of these reactions can be treated with other reagents to generate new functionality - think synthesis! Make up your own examples - e.g. What if you treated compound D with CH,MgBr? In the table, summarize the types of products produced from these reactions. CH3 MgBr acid quench acid quench NaOH, H2O EIO OEt acid quench acid quench acid quench D LIAIHA acid quench acid...
please answer all :) 250 Chapter 9 Chapter 9 Practice Test Which of the following reagents...
please answer all :)
250 Chapter 9 Chapter 9 Practice Test Which of the following reagents is the best one to use in order to wing reagents is the best one to use in order to convert methyl alcohol into methy bromide? 2. Br HBr Br NaBr Br* a. what would be the major product obtained from the reaction of the epoxide shown below containing 0.1 M HCI? CH2CH; CH CH3 b. What would be the major product obtained from...
12). Which compounds are formed when the compound behones presence of acid? below is hydelysed in...
12). Which compounds are formed when the compound behones presence of acid? below is hydelysed in (CH3)2CHCHOCH CH 1 (CH3)2 CHCHOH III. (CH3)2 CHCHO ll. IV. СНСН:011 CHICHO A) 1 and II B) I1I and IV CI and IV D) 13) Write the IUPAC name of the following A) 4-ethyl-6-hexanoate B) 3-ethyl-hexanoic acid C) 3-ethyl-pentanoic acid D) 4-ethyl-pentanal 14) What is the product of the following reaction? CH3 0 H3C NH H3C
CH3 CH3 1. Hg(OAC), H20 2. NaBH НО, І CH3 CH, Hoc H₃C/ Acid-catalyzed addition of...
CH3 CH3 1. Hg(OAC), H20 2. NaBH НО, І CH3 CH, Hoc H₃C/ Acid-catalyzed addition of water to an alkene yields an alcohol with Markovnikov regiochemistry. The electrophilic H adds to the sp carbon with the most hydrogens to yield the most stable carbocation intermediate, which then adds water to give the product alcohol. Because a carbocation intermediate is formed, rearrangements can occur prior to the addition of water. To avoid the possibility of rearrangement and still give a Markovnikov...
12. Which is the major product of the reaction shown? (a) (b) (c) (d) 13. What...
12. Which is the major product of the reaction shown? (a) (b)
(c) (d) 13. What are all of the possible products formed in the
following reaction? (choose all correct answers) (a) (b) (c) (d)
(e) (f) 14. The three compounds below can form a carbocation in the
presence of H2O and H2SO4. Which ones will form the same
carbocation? (a) I and II (b) I and III (c) II and III (d) all
three will form the same carbocation...
Draw the products formed when each ester is treated with lithium hydroxide and water. Reaction A...
Draw the products formed when each ester is treated with lithium hydroxide and water. Reaction A Select Draw Rings More Erase LiOH CH,CH,CH(CH, JOC=OCH(CH3)2 HO @ 2 Q Reaction B Select Draw Rings More Erase LiOH CH,CH,CH,C=00CH,CHCH HO Reaction C Select Draw Rings More Erase LiOH H, @ 21a, Reaction D Select Draw Rings More Erase LiOH HO
Acid Catalyzed Hydration-treatment of alkenes with water in the presence of acid catalyst leads to the...
Acid Catalyzed Hydration-treatment of alkenes with water in the presence of acid catalyst leads to the formation of alcohols. H2SO4/H2O > 150°C Mechanism Major Product Acid catalyzed dehydration goes through a carbocation intermediate. This means that the Markovnikov product is obtained when carbocation rearrangements do not occur. The need for excessively high temperatures makes this reaction of limited use in laboratory synthesis. Oxymercuration - Oxymercuration involves the addition of Hg to the alkene using mercury (II) acetate Hg(OAc) followed by...
Grignard reagents cannot be generated in the presence of an
alcohol, as the acidic hydrogen will quench the Grignard reagent as
it is formed. Choose the appropriate protecting group, then draw
the expected intermediates (with the protecting group drawn out)
and final product in this sequence. All structures should be
neutral; omit byproducts.
Grignard reagents cannot be generated in the presence of an alcohol, as the acidic hydrogen will quench Map Grignard reagent as it is formed. Choose the appropriate...
Draw the product formed when 1-bromobutane is treated with cach reagent. 1. Li (2 equiv) 2. Mg in (CHCH2):0 solvent 3. Li (2 equiv), then Cul (0.5 equiv) 4. The answer in (a), then H;O 5. The answer in (b), then D20 6. The answer in (a), then CH,CCH Draw the product formed when (CH3CH2CH2CH2) CuLi is treated with each compound. In so cases, no reaction occurs. CHн, ,then H,O Draw the product formed when the a.ß-unsaturated ketone A is...
1. The reaction web includes most of the reactions of enolates we have studied. The products of these reactions can be treated with other reagents to generate new functionality - think synthesis! Make up your own examples - e.g. What if you treated compound D with CH,MgBr? In the table, summarize the types of products produced from these reactions. CH3 MgBr acid quench acid quench NaOH, H2O EIO OEt acid quench acid quench acid quench D LIAIHA acid quench acid...
please answer all :)
250 Chapter 9 Chapter 9 Practice Test Which of the following reagents is the best one to use in order to wing reagents is the best one to use in order to convert methyl alcohol into methy bromide? 2. Br HBr Br NaBr Br* a. what would be the major product obtained from the reaction of the epoxide shown below containing 0.1 M HCI? CH2CH; CH CH3 b. What would be the major product obtained from...
12). Which compounds are formed when the compound behones presence of acid? below is hydelysed in (CH3)2CHCHOCH CH 1 (CH3)2 CHCHOH III. (CH3)2 CHCHO ll. IV. СНСН:011 CHICHO A) 1 and II B) I1I and IV CI and IV D) 13) Write the IUPAC name of the following A) 4-ethyl-6-hexanoate B) 3-ethyl-hexanoic acid C) 3-ethyl-pentanoic acid D) 4-ethyl-pentanal 14) What is the product of the following reaction? CH3 0 H3C NH H3C
CH3 CH3 1. Hg(OAC), H20 2. NaBH НО, І CH3 CH, Hoc H₃C/ Acid-catalyzed addition of water to an alkene yields an alcohol with Markovnikov regiochemistry. The electrophilic H adds to the sp carbon with the most hydrogens to yield the most stable carbocation intermediate, which then adds water to give the product alcohol. Because a carbocation intermediate is formed, rearrangements can occur prior to the addition of water. To avoid the possibility of rearrangement and still give a Markovnikov...
12. Which is the major product of the reaction shown? (a) (b)
(c) (d) 13. What are all of the possible products formed in the
following reaction? (choose all correct answers) (a) (b) (c) (d)
(e) (f) 14. The three compounds below can form a carbocation in the
presence of H2O and H2SO4. Which ones will form the same
carbocation? (a) I and II (b) I and III (c) II and III (d) all
three will form the same carbocation...
Draw the products formed when each ester is treated with lithium hydroxide and water. Reaction A Select Draw Rings More Erase LiOH CH,CH,CH(CH, JOC=OCH(CH3)2 HO @ 2 Q Reaction B Select Draw Rings More Erase LiOH CH,CH,CH,C=00CH,CHCH HO Reaction C Select Draw Rings More Erase LiOH H, @ 21a, Reaction D Select Draw Rings More Erase LiOH HO
Acid Catalyzed Hydration-treatment of alkenes with water in the presence of acid catalyst leads to the formation of alcohols. H2SO4/H2O > 150°C Mechanism Major Product Acid catalyzed dehydration goes through a carbocation intermediate. This means that the Markovnikov product is obtained when carbocation rearrangements do not occur. The need for excessively high temperatures makes this reaction of limited use in laboratory synthesis. Oxymercuration - Oxymercuration involves the addition of Hg to the alkene using mercury (II) acetate Hg(OAc) followed by...
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