Homework Answers
In above allylic bromination reaction using NBS and UV light free radical reaction two intermediates are formed shown by A and B
3. These two free radical intermediates are non-equivalent as in compound A free radical carbon is primary whitle in compound B free radical carbon is secondary.
4. Reaction between free radical bromine and free radical intermediate A gave (E)-1-bromobut-2-ene product while with ree radical intermediate B gave 3-bromo-2-methylbut-1-ene product.
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Organic Chemistry
1. Draw each one of the following molecules and label it as:
alkyl halide,...
CНз NBS, CCI4, hv lintermediate product(s) Hас Give all resonance structures of the allylic radical intermediate tha...
CНз NBS, CCI4, hv lintermediate product(s) Hас Give all resonance structures of the allylic radical intermediate that arise from reaction above. 2. All allylic C-H on the molecule are equivalent so only show the two resonance structures arising from one C-H bond reacting. 3. Are the resonance structures above equivalent or non-equivalent? Think about the degree of the atom where the radical (the dot) is. Give all the products expected from the reaction above. 4.
QUIZZ-CHEMISTRY 306 ORGANIC.[10 POINTS EACH] 1. Classify each compound an alkyl halide, a vinyl halide, or...
QUIZZ-CHEMISTRY 306 ORGANIC.[10 POINTS EACH] 1. Classify each compound an alkyl halide, a vinyl halide, or an aryl halide CICI Br Br Cl 2. Predict the compound that will undergo Sn2 reaction faster сња 3. Predict the compound that will undergo Sw1 reaction faster. H3C OR Cl
organic chemistry Substitution Problems 1. in each of the problems below, label the alkyl halide as...
organic chemistry
Substitution Problems 1. in each of the problems below, label the alkyl halide as primary secondary, or tertiary Label the nucleophile as strong or weak Decide whether an 5,2 or an 51 reaction occurs. After, show the mechanism and product or products, indicate stereochemistry where appropriate Reaction of 1-bromopropane and sodium methoxide in methanol + Na CH- CH,OH Reaction of bromopropane in ethanol CHCHH - Reaction of R)-chloromethylheptane in acetic acid + CH CH.COOH Reaction of the molecule...
17) Which of the following is a secondary halide? A) CICH2CH2C(CH3)3 B) CICH2CH2CH(CH3)2 C) (CH3)2CCICH2CH3 D)...
17) Which of the following is a secondary halide? A) CICH2CH2C(CH3)3 B) CICH2CH2CH(CH3)2 C) (CH3)2CCICH2CH3 D) (CH3)3CCHCICH3 E) CICH2C(CH3)CH2CH3 17) What is the IUPAC name of the compound shown below? нс, CH2CH3 С" A) (15,3S)-1,3-dichloro-l-ethyl-3-methylcyclopentane B) (IR,3S)-1,3-dichloro-1-methyl-3-ethylcyclopentane C) (IR.45)-1,4-dichloro-1-ethyl-4-methylcyclopentane D) (IR,3S)-1,3-dichloro-l-ethyl-3-methylcyclopentane E) (IS3R)-1,3-dichloro-3-ethyl-1-methylcyclopentane 18) What type of intermediate is present in the SN2 reaction of cyanide with bromoethane? A) carbocation B) free radical C) carbene D) carbanion E) This reaction has no intermediate 19) Which of the following alkyl chlorides...
pleas help 5,6,7,8,9,10 III IV 5. The product of free-radical halogenation reactions is an alkyl halide....
pleas help 5,6,7,8,9,10
III IV 5. The product of free-radical halogenation reactions is an alkyl halide. The major amount of this halide forms during the second step of propagation. However, you should be aware that one possible termination step also forms alkyl halides. Why does the majority of the alkyl halide product come from the propagation step and not the termination step? A. At any given time during the reaction, the concentration of both the alkyl radical and the halide...
a. Give the following alkyl halide produces a mixture of products when it reacts with sodium...
a. Give the following alkyl halide produces a mixture of
products when it reacts with sodium methoxide in methanol. Predict
all the reasonable products produced. Indicate which product is the
major product.
b. Give the mechanism of reaction from above that produces the
cis alkene by E2.
1. a. Give the following alkyl halide produces a mixture of products when it reacts with sodium methoxide in methanol. Predict all the reasonable products produced. Indicate which product is the major product....
Experiment 1 Comment on Structure and Formula Alkyl Halide Name Nucleophile Time (min) to relative reaction...
Experiment 1 Comment on Structure and Formula Alkyl Halide Name Nucleophile Time (min) to relative reaction Precipitate rates of alkyl halides wwte preci pi tote 2. whte vii. cl chloro min nprecipi tote ci benzul 0 Secs preci p tate Experiment 2 Comment on Alkyt Halide Name Structure and Time (min) to relative reactivity Precipitate of the leaving NucleophileT Formula group white vin prei p min whi te Ci Do reactidi no 咐ano Post Lab Questions- Experiment 5-SN2 Reactions 1....
9. (20pts) For each pair of molecules, circle the one with the indicated property: a) the...
9. (20pts) For each pair of molecules, circle the one with the indicated property: a) the better nucleophile in MeCN b) the better nucleophile in CH3OH CH3S or CH30 c) the ion that will give the higher substitution to elimination product ratio CH3S or CH30 Won d) the more reactive alkyl halide in a solvolysis reaction aior e) the more reactive alcohol towards substitution — он оr f) the more reactive alkyl halide in an E2 reaction balt Br g)...
1. Draw all of the constitutional isomers that are formed in each elimination reaction and label...
1. Draw all of the constitutional isomers that are formed in each elimination reaction and label the mechanism as E2 or E1. a. 2-bromo butane reacts with methoxide b. 1-chloro-1-ethyl 2 methyl cyclopentane reacts with water 2. For which reaction mechanism are each of the following statements true? Mechanism S1, S2, E1 or E2. A statement may be true for one or more mechanisms a. The mechanism involves carbocation intermediates b. The mechanism has two steps C. The reaction rate...
Electrophilic Addition 16,44 Draw the products formed when each compound is treated with one equivalent of...
Electrophilic Addition 16,44 Draw the products formed when each compound is treated with one equivalent of HBr. 10.45 Treatment of alkenes A and B with HBrave the same all halide C. Draw a mechanism for each reaction, including all reasonable resonance structures for any intermediate DOMOHON Bronson Her MCHACHA 16.46 Draw a stepwise mechanism for the following reaction.
CНз NBS, CCI4, hv lintermediate product(s) Hас Give all resonance structures of the allylic radical intermediate that arise from reaction above. 2. All allylic C-H on the molecule are equivalent so only show the two resonance structures arising from one C-H bond reacting. 3. Are the resonance structures above equivalent or non-equivalent? Think about the degree of the atom where the radical (the dot) is. Give all the products expected from the reaction above. 4.
QUIZZ-CHEMISTRY 306 ORGANIC.[10 POINTS EACH] 1. Classify each compound an alkyl halide, a vinyl halide, or an aryl halide CICI Br Br Cl 2. Predict the compound that will undergo Sn2 reaction faster сња 3. Predict the compound that will undergo Sw1 reaction faster. H3C OR Cl
organic chemistry
Substitution Problems 1. in each of the problems below, label the alkyl halide as primary secondary, or tertiary Label the nucleophile as strong or weak Decide whether an 5,2 or an 51 reaction occurs. After, show the mechanism and product or products, indicate stereochemistry where appropriate Reaction of 1-bromopropane and sodium methoxide in methanol + Na CH- CH,OH Reaction of bromopropane in ethanol CHCHH - Reaction of R)-chloromethylheptane in acetic acid + CH CH.COOH Reaction of the molecule...
17) Which of the following is a secondary halide? A) CICH2CH2C(CH3)3 B) CICH2CH2CH(CH3)2 C) (CH3)2CCICH2CH3 D) (CH3)3CCHCICH3 E) CICH2C(CH3)CH2CH3 17) What is the IUPAC name of the compound shown below? нс, CH2CH3 С" A) (15,3S)-1,3-dichloro-l-ethyl-3-methylcyclopentane B) (IR,3S)-1,3-dichloro-1-methyl-3-ethylcyclopentane C) (IR.45)-1,4-dichloro-1-ethyl-4-methylcyclopentane D) (IR,3S)-1,3-dichloro-l-ethyl-3-methylcyclopentane E) (IS3R)-1,3-dichloro-3-ethyl-1-methylcyclopentane 18) What type of intermediate is present in the SN2 reaction of cyanide with bromoethane? A) carbocation B) free radical C) carbene D) carbanion E) This reaction has no intermediate 19) Which of the following alkyl chlorides...
pleas help 5,6,7,8,9,10
III IV 5. The product of free-radical halogenation reactions is an alkyl halide. The major amount of this halide forms during the second step of propagation. However, you should be aware that one possible termination step also forms alkyl halides. Why does the majority of the alkyl halide product come from the propagation step and not the termination step? A. At any given time during the reaction, the concentration of both the alkyl radical and the halide...
a. Give the following alkyl halide produces a mixture of
products when it reacts with sodium methoxide in methanol. Predict
all the reasonable products produced. Indicate which product is the
major product.
b. Give the mechanism of reaction from above that produces the
cis alkene by E2.
1. a. Give the following alkyl halide produces a mixture of products when it reacts with sodium methoxide in methanol. Predict all the reasonable products produced. Indicate which product is the major product....
Experiment 1 Comment on Structure and Formula Alkyl Halide Name Nucleophile Time (min) to relative reaction Precipitate rates of alkyl halides wwte preci pi tote 2. whte vii. cl chloro min nprecipi tote ci benzul 0 Secs preci p tate Experiment 2 Comment on Alkyt Halide Name Structure and Time (min) to relative reactivity Precipitate of the leaving NucleophileT Formula group white vin prei p min whi te Ci Do reactidi no 咐ano Post Lab Questions- Experiment 5-SN2 Reactions 1....
9. (20pts) For each pair of molecules, circle the one with the indicated property: a) the better nucleophile in MeCN b) the better nucleophile in CH3OH CH3S or CH30 c) the ion that will give the higher substitution to elimination product ratio CH3S or CH30 Won d) the more reactive alkyl halide in a solvolysis reaction aior e) the more reactive alcohol towards substitution — он оr f) the more reactive alkyl halide in an E2 reaction balt Br g)...
1. Draw all of the constitutional isomers that are formed in each elimination reaction and label the mechanism as E2 or E1. a. 2-bromo butane reacts with methoxide b. 1-chloro-1-ethyl 2 methyl cyclopentane reacts with water 2. For which reaction mechanism are each of the following statements true? Mechanism S1, S2, E1 or E2. A statement may be true for one or more mechanisms a. The mechanism involves carbocation intermediates b. The mechanism has two steps C. The reaction rate...
Electrophilic Addition 16,44 Draw the products formed when each compound is treated with one equivalent of HBr. 10.45 Treatment of alkenes A and B with HBrave the same all halide C. Draw a mechanism for each reaction, including all reasonable resonance structures for any intermediate DOMOHON Bronson Her MCHACHA 16.46 Draw a stepwise mechanism for the following reaction.
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