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Reaction of alkenes and alkynes: 1. Reaction name: 2. Identify: majority or minority organic product 3....
Predict the major organic product in the following reactions and classify the type of addition reaction it is
1. Predict the major organic product in the following reactions and classify the type of addition reaction it is (syn vs anti, Markovnikov vs anti-Markovnikov, it can be multiple of these). If there is no reaction say NR. If multiple products are possible, please indicate al major organic products. Be sure to indicate the proper stereochemical outcome!2. Fill in the missing components for the following reactions. More than one step may be necessary. If there is no reaction say NR....
QUESTION 2 1. Which one of the following statements is true? (HX is either HCl or HBr) Alkynes undergo electrop...
QUESTION 2 1. Which one of the following statements is true? (HX is either HCl or HBr) Alkynes undergo electrophilic substitution reactions with HX to give halogenated alkenes. Adding an excess of HX to an alkyne gftens times will stop the reaction at the alkene step instead of forming the halogenated alkane. When adding one mole of HX to an alkyne, regioselective Markovnikov addition is observed for the alkene product typically exhibiting trans stereochemistry When adding one mole of HX...
4. [12 pts] Propose mechanisms for the formation of all 3 products shown in the reaction...
4. [12 pts] Propose mechanisms for the formation of all 3 products shown in the reaction below: (draw curved arrows, intermediates, and resonance structures if necessary. NO NEED FOR TRANSITION STATES! CH CH CH CH Br Heat CH,CH,OH OCH.CH Mechanism.14 points) Mechanism 2 points) Mechanism.3 14 points) 5. [14 pts] Provide the major products of reacting the alkene shown in the middle of the scheme below with all the reagents independently. Draw the products' structures in the corresponding table below...
Question 33 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene....
Question 33 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene. O a) Markovnikov orientation with anti-addition Ob) Anti-Markovnikov orientation with anti-addition Oc) Markovnikov orientation with syn-addition d) Anti-Markovnikov orientation with syn-addition Question 34 (2 points) What is the IUPAC name of the structure below? NO2 F OH a) 1-fluoro-3-iodo-5-hydroxynitrobenzene Ob) 1-fluoro-2-nitro-3-iodo-5-phenol Oc) 3-fluoro-5-iodo-4-nitrophenol d) m-fluoro-m-iodo-p-nitrophenol
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...
25. Draw the product of the reaction of 3-methyl-1-butene with HBr. Multiple Choice Identify the choice...
25. Draw the product of the reaction of 3-methyl-1-butene with HBr. Multiple Choice Identify the choice that best completes the statement or answers the question. 26. Consider the following intermediate. Which is applicable to this structure? a. occurs during the addition of HBr b. results in anti stereochemistry c. is called a bromohydrin d. produces only the cis isomer 27. Which of the following is a difference between hydroboration/oxidation and o a. heteroatom-containing intermediate b. Markovnikov regiochemistry c. hydration d....
Question 3 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene....
Question 3 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene. a) Anti-Markovnikov orientation with anti-addition Ob) Markovnikov orientation with anti-addition Oc) Anti-Markovnikov orientation with syn-addition O d) Markovnikov orientation with syn-addition Question 4 (2 points) How many signals would you expect in the 'H NMR spectrum of the following compound? O a) 4 Ob) 5 Oc) 7 O d) 6
one of the Kekulé structures is not consistent with valence rules? 3. How many degrees of...
one of the Kekulé structures is not consistent with valence rules? 3. How many degrees of unsaturation (double bond equivalents) ore fouand in 3 O-H 4. The regiochemistry of Markovnikov with no rearrangements of alkenes is c. subject to solvent effects 5. The kinetics of this reaction is. a. first-order b. c, cannot be determined 6. Hydroboration/oxidation of alkenes occurs with a. syn b. trans c. anti d. random 7. The reaction of an alkene with dichlorocarbene is: 8. The...
CHEM 2 Exams Section 2 Give the intermediate then made the major Organic reactions with alkenes. Show Stereochemist...
CHEM 2 Exams Section 2 Give the intermediate then made the major Organic reactions with alkenes. Show Stereochemistry when applicable len predict the major organic product for the follow y when applicable. (1 pt. each) 1 Intermediate HBr, hv Br2, CCIA C HI, Eto HI, Eto
1) Predict the major product of the following reaction.
1) Predict the major product of the following reaction. 2) What synthetic goal is achieved by subjecting an alkene to an oxymercuration-demercuration sequence? A) syn-hydroxylation B) Markovnikov addition of H2O wherein skeletal rearrangement is prevented C) anti-Markovnikov addition of H2O wherein skeletal rearrangement is promoted D) Markovnikov addition of H2O wherein skeletal rearrangement is promoted E) anti-Markovnikov addition of H20 wherein skeletal rearrangement is prevented 3) Treatment of 2-methylpropene with which of the following reaction conditions results in an anti-Markovnikov addition product? (circle all that apply) A) dry...
QUESTION 2 1. Which one of the following statements is true? (HX is either HCl or HBr) Alkynes undergo electrophilic substitution reactions with HX to give halogenated alkenes. Adding an excess of HX to an alkyne gftens times will stop the reaction at the alkene step instead of forming the halogenated alkane. When adding one mole of HX to an alkyne, regioselective Markovnikov addition is observed for the alkene product typically exhibiting trans stereochemistry When adding one mole of HX...
4. [12 pts] Propose mechanisms for the formation of all 3 products shown in the reaction below: (draw curved arrows, intermediates, and resonance structures if necessary. NO NEED FOR TRANSITION STATES! CH CH CH CH Br Heat CH,CH,OH OCH.CH Mechanism.14 points) Mechanism 2 points) Mechanism.3 14 points) 5. [14 pts] Provide the major products of reacting the alkene shown in the middle of the scheme below with all the reagents independently. Draw the products' structures in the corresponding table below...
Question 33 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene. O a) Markovnikov orientation with anti-addition Ob) Anti-Markovnikov orientation with anti-addition Oc) Markovnikov orientation with syn-addition d) Anti-Markovnikov orientation with syn-addition Question 34 (2 points) What is the IUPAC name of the structure below? NO2 F OH a) 1-fluoro-3-iodo-5-hydroxynitrobenzene Ob) 1-fluoro-2-nitro-3-iodo-5-phenol Oc) 3-fluoro-5-iodo-4-nitrophenol d) m-fluoro-m-iodo-p-nitrophenol
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...
25. Draw the product of the reaction of 3-methyl-1-butene with HBr. Multiple Choice Identify the choice that best completes the statement or answers the question. 26. Consider the following intermediate. Which is applicable to this structure? a. occurs during the addition of HBr b. results in anti stereochemistry c. is called a bromohydrin d. produces only the cis isomer 27. Which of the following is a difference between hydroboration/oxidation and o a. heteroatom-containing intermediate b. Markovnikov regiochemistry c. hydration d....
Question 3 (2 points) Provide the best description for an oxymercuration demercuration reaction of an alkene. a) Anti-Markovnikov orientation with anti-addition Ob) Markovnikov orientation with anti-addition Oc) Anti-Markovnikov orientation with syn-addition O d) Markovnikov orientation with syn-addition Question 4 (2 points) How many signals would you expect in the 'H NMR spectrum of the following compound? O a) 4 Ob) 5 Oc) 7 O d) 6
one of the Kekulé structures is not consistent with valence rules? 3. How many degrees of unsaturation (double bond equivalents) ore fouand in 3 O-H 4. The regiochemistry of Markovnikov with no rearrangements of alkenes is c. subject to solvent effects 5. The kinetics of this reaction is. a. first-order b. c, cannot be determined 6. Hydroboration/oxidation of alkenes occurs with a. syn b. trans c. anti d. random 7. The reaction of an alkene with dichlorocarbene is: 8. The...
CHEM 2 Exams Section 2 Give the intermediate then made the major Organic reactions with alkenes. Show Stereochemistry when applicable len predict the major organic product for the follow y when applicable. (1 pt. each) 1 Intermediate HBr, hv Br2, CCIA C HI, Eto HI, Eto
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