Homework Answers
Among the employed nucleophiles/bases the order of nucleophilicity/bacisity is
CH3O- > OH- > CH3COO- > H2O
The least basic of all is H2O , thus it cannot promote elimination , rather give mainly substitution product.
Thus the substitution/elimination product ratio will be highest with H2O and lowest with CH3O-.
OPTION C
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MC. Which gives the highest ratio of substitution/ elimination products? CH,COO + OH + CH40
2. The following reaction gives two substitution products as well as the three elimination products shown....
2. The following reaction gives two substitution products as well as the three elimination products shown. Provide a) mechanisms to account for all three elimination products and b) the structures of the substitution products. CH3CH2OH
pathway, substitution or elimination, will predominate and so a mixture of products is frequently observed. In...
pathway, substitution or elimination, will predominate and so a mixture of products is frequently observed. In contrast to the El reaction which involves a carbocation intermediate, the ElcB reaction takes place through a carbanion intermediate. Base-induced abstraction of a proton in a slow, rate-limiting step gives an anion which then expels the leaving group from the adjacent carbon. The reaction is particularly suited to the elimination of substrates which contain poor leaving groups two carbons removed from a carbonyl group....
09 Which is the major product of the following substitution reaction? CH₂CH₂OH NaBr ? A) CH₃...
09 Which is the major product of the following substitution reaction? CH₂CH₂OH NaBr ? A) CH₃ CH₂ Br D) All of the Above B) CH₃ CH₂ Na E) None of the Above c) CH₂-E-H 20 Which is the major product of the following sultitution reaction? CH₃ CH-CH-CH2 HBr ? OH CH₂ C) CH C=CH-CH₂ A) CH₂ CH-CH=CH₂ Br CH3 Br B) CH₂ C-CH₂=CH₂ D) None of the Above 2 Which is the major product of the following reaction? CH3 PBra...
Answers please 3 attempts letft Check my work The ratio of elimination to substitution is exactly...
Answers please
3 attempts letft Check my work The ratio of elimination to substitution is exactly the same (26% elimination) for 2-bromo-2-methylbutane and 2-iodo-2-methylbutane in 80% ethanol/20% water at 25°C. What two substitution products are formed from each substrate? Select all that apply OH 巾 HO OH
Classify each of the following organic reactions. Substitution Elimination Addition Type of Reaction Reaction OH CH2-CH...
Classify each of the following organic reactions. Substitution Elimination Addition Type of Reaction Reaction OH CH2-CH + HCN– CH3-CH-CN CH3-CH2-CH2-OH + HBr – CH3-CH2-CH2-Br + H2O CH3-CH=CH-CH3 + HBr – CH3-CH-CH2-CHz Br
is the major product of the following substitution reaction! CH₂CH₂OH NaBr ? A) CH₃ CH₂ Br D) All of the Above B) C...
is the major product of the following substitution reaction! CH₂CH₂OH NaBr ? A) CH₃ CH₂ Br D) All of the Above B) CH₃ CH₂ Na E) None of the above c) CH3-C-H 20 Which is the major product of the following substitution reaction? ? CHICH-CH-CH2 HBr CH OH CH₂ C) CH₂ C=CH-CH₂ Shy A) CH₂ CH-CH=CH₂ D) None of the Above. B) CH₃ ¢-CH₂-CH₃ Br 2) Which is the major product of the following reaction? CH3 CH PBr3 ? CH₂...
possible Substitution and elimination can be competing reactions. Show all the elimination/substitution products of this reaction...
possible Substitution and elimination can be competing reactions. Show all the elimination/substitution products of this reaction and define the type (uni or bi) NaOCH3
5. 10points. Determine which of substitution or elimination mechanism works best in order to form the...
5. 10points. Determine which of substitution or elimination mechanism works best in order to form the major product of the following reaction? (hint: draw chair conformation for the molecule) CH3 NaOCHCH, CH,CH,OH "CH3 Hac CH3
Give the substitution and elimination products. 1st problem should have 9 products, and the second should...
Give the substitution and elimination products. 1st problem
should have 9 products, and the second should have 4
products.
AgNO3/H,0 Нас CH2CH3 СІ NaOCH3 Ph-с-с-ін H3C CH-CH2, CH3OH
3 & 4 please Draw all possible El elimination products and indicate which alkene is the...
3
& 4 please
Draw all possible El elimination products and indicate which alkene is the major product: CH3OH CH3 a) HC-C-ci CH3 CH3CH2OH CH3C430H CH3CH2OH Br CH3CH2OH I X ORSOGON CH3OH Br brow all possible E2 elimination products and indicate which okene is the major product CH, ON CH, OH CHÚCHONa CH,CH OH CHÚCH ONa CH,CH, OH CH3CH2ONa d YoX CH₂CH₂OH CH,CH OH (CH3),COH TONE CH,(CH)CH,OH CHCH,ONa CH,CH,OH CH,CH, CH,CH,ONa CH,CH, OH CH,
2. The following reaction gives two substitution products as well as the three elimination products shown. Provide a) mechanisms to account for all three elimination products and b) the structures of the substitution products. CH3CH2OH
pathway, substitution or elimination, will predominate and so a mixture of products is frequently observed. In contrast to the El reaction which involves a carbocation intermediate, the ElcB reaction takes place through a carbanion intermediate. Base-induced abstraction of a proton in a slow, rate-limiting step gives an anion which then expels the leaving group from the adjacent carbon. The reaction is particularly suited to the elimination of substrates which contain poor leaving groups two carbons removed from a carbonyl group....
09 Which is the major product of the following substitution reaction? CH₂CH₂OH NaBr ? A) CH₃ CH₂ Br D) All of the Above B) CH₃ CH₂ Na E) None of the Above c) CH₂-E-H 20 Which is the major product of the following sultitution reaction? CH₃ CH-CH-CH2 HBr ? OH CH₂ C) CH C=CH-CH₂ A) CH₂ CH-CH=CH₂ Br CH3 Br B) CH₂ C-CH₂=CH₂ D) None of the Above 2 Which is the major product of the following reaction? CH3 PBra...
Answers please
3 attempts letft Check my work The ratio of elimination to substitution is exactly the same (26% elimination) for 2-bromo-2-methylbutane and 2-iodo-2-methylbutane in 80% ethanol/20% water at 25°C. What two substitution products are formed from each substrate? Select all that apply OH 巾 HO OH
Classify each of the following organic reactions. Substitution Elimination Addition Type of Reaction Reaction OH CH2-CH + HCN– CH3-CH-CN CH3-CH2-CH2-OH + HBr – CH3-CH2-CH2-Br + H2O CH3-CH=CH-CH3 + HBr – CH3-CH-CH2-CHz Br
is the major product of the following substitution reaction! CH₂CH₂OH NaBr ? A) CH₃ CH₂ Br D) All of the Above B) CH₃ CH₂ Na E) None of the above c) CH3-C-H 20 Which is the major product of the following substitution reaction? ? CHICH-CH-CH2 HBr CH OH CH₂ C) CH₂ C=CH-CH₂ Shy A) CH₂ CH-CH=CH₂ D) None of the Above. B) CH₃ ¢-CH₂-CH₃ Br 2) Which is the major product of the following reaction? CH3 CH PBr3 ? CH₂...
possible Substitution and elimination can be competing reactions. Show all the elimination/substitution products of this reaction and define the type (uni or bi) NaOCH3
5. 10points. Determine which of substitution or elimination mechanism works best in order to form the major product of the following reaction? (hint: draw chair conformation for the molecule) CH3 NaOCHCH, CH,CH,OH "CH3 Hac CH3
Give the substitution and elimination products. 1st problem
should have 9 products, and the second should have 4
products.
AgNO3/H,0 Нас CH2CH3 СІ NaOCH3 Ph-с-с-ін H3C CH-CH2, CH3OH
3
& 4 please
Draw all possible El elimination products and indicate which alkene is the major product: CH3OH CH3 a) HC-C-ci CH3 CH3CH2OH CH3C430H CH3CH2OH Br CH3CH2OH I X ORSOGON CH3OH Br brow all possible E2 elimination products and indicate which okene is the major product CH, ON CH, OH CHÚCHONa CH,CH OH CHÚCH ONa CH,CH, OH CH3CH2ONa d YoX CH₂CH₂OH CH,CH OH (CH3),COH TONE CH,(CH)CH,OH CHCH,ONa CH,CH,OH CH,CH, CH,CH,ONa CH,CH, OH CH,
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