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The most general form of the reaction may be given as the following: Nuc: + R-LG...
Nucleophilic Acyl Substitution Nucleophilic Acyl Substitution is a major reaction for acids and acid derivatives. This...
Nucleophilic Acyl Substitution Nucleophilic Acyl Substitution is a major reaction for acids and acid derivatives. This is the reaction that converts one derivative into another. The substitution can occur in basic or acidic condition, depending on a derivative. Nucleophilic Acyl Substitution in Basic Conditions-general mechanism NUCLEOPHILIC ATTACK LOSS OF A LEAVING GROUP Nue Nuc Nuc Note: in cases when the nucleophile is neutral (H20, ROH,RNHzl, the mechanism includes one more step: deprotonation of an already attached Nuc: group by another...
Name the type of reaction, reactant (functional group) and product (functional group) of the following: -Acid/base...
Name the type of reaction, reactant (functional group) and product
(functional group) of the following:
-Acid/base
-Addition
-Combustion
-Elimination
-Substitution
material for reactions 1 and 2) H3C— CH reaction 1 Br Br HO CH2=CH2 HC-CH2 HC-CH2 reaction 2 Br reaction 3 CH2 H3C- H2C= CH2 reaction 4 C OH reaction 5 - HC-CH2 H3C— CH Lei reaction 6 HEC OCH HEC OH HUC CNH,
Need asap please help A. Which of A) and Please predict the Nuc- will pts) u...
Need asap please help
A. Which of A) and Please predict the Nuc- will pts) u a sN2 reaction? (1pt most readily? (1pt) (1pt) rea most sN1 reaction Gr2 reaction an an undergo sN2 undergo favor Nuc- that w (6 products factors Nuc- light strong strong strong compounds and compounds B) following Br2 Br2 experimental (halide) and and KMno4 the halide halide following 1. the KMno4 the of C2H4 are KMno4 czHA substrate C6H6 CH44 What Tertiary Primary 3, (CH3)3CCH2I...
Question 17 Which S N2 reaction will occur most rapidly in a mixture of water and...
Question 17 Which S N2 reaction will occur most rapidly in a mixture of water and ethanol? A. Br + CH3CH2-F- CH3CH2-Br + F B.1+ CH3CH2-C1 CH3CH2-1 + CI" C.1+ CH3CH2-Br CH3CH2-1 + Br" D. Br+ + CH3CH2-C1- CH3CH2-Br + Cl- E.1 + CH3CH2-F- CH3CH2-1 + F Question 18 Which nucleophilic substitution reaction is not likely to occur? A. 1- + CH3CH2-OH CH3CH2-1 + OH- B. OH + CH3CH2-C1 CH3CH2-OH + CI- C.1- + CH3CH2-Br CH3CH2-1 + Br- D.CH30- +...
need help with 14-21 Stereochemistry of the Su2 reaction In the Sn2 reaction the tetrahedral carbon...
need help with 14-21
Stereochemistry of the Su2 reaction In the Sn2 reaction the tetrahedral carbon center is inverted. We describe the mechanism as nudeophilic (Nuc) back side attack; the leaving group (LG) is leav ing from the front side. Generally, the LG and the Nucare electron rich so it would be unfavorable for them to react from the same side (charge repuls ion). The geometry of the carbon at the transition state is trigonal planar. 14) Label the 2-bromobuta...
1) State which of the electrophiles given below will react preferentially by i) SN1, ii) by...
1) State which of the electrophiles given below will react
preferentially by i) SN1, ii) by SN2, or iii) capable of reacting
by either of the two mechanisms depending on the given conditions.
How can you affect those conditions to favour SN1 or SN2? Reason
your predictions based on the structures of the compounds. Br-CH3,
Br-CH2CH3, Br-CH(CH3)2, Br-C(CH3)3, Br-CH2-C5H6; C5H6 = phenyl
Introduction Alkyl halides can be prepared from alcohols by reactions with hydrogen halides (HCI, HBr, or HI) via...
1. What is the IUPAC name for the following molecule? 2. What is the IUPAC name...
1. What is the IUPAC name for the following molecule? 2. What is the IUPAC name for the following molecule? 3. Which of the following is most reactive in nucleophilic acyl substitution reactions? HO 4. What is the major organic product of the following reaction? SOCI2 HO но HS ClI ClI 5. What is the major organic product of the following reaction? CI H2O OH ClI Ho HO HO ClI
1. Predict the major substitution product(s) for the following reactions. Include stereochemistry if appropriate. You may...
1. Predict the major substitution product(s) for the following reactions. Include stereochemistry if appropriate. You may assume an aqueous workup is performed after each reaction. 1. Nah, DMF ТОН 2. Mel BrMg-Ph KCN 16 { ad ton ot MeOH HD Na Br Me DMSO EtOH Br ~ Br DMSO * Me OH LNH2 M HO Me-S (1 equiv) Me DMF
Draw the least stable resonance form for the intermediate in the following electrophilic substitution reaction. NO2...
Draw the least stable resonance form for the intermediate in the following electrophilic substitution reaction. NO2 NO2 Brz/ FeBrz Br . You do not have to consider stereochemistry. Include all valence lone pairs in your answer. • In cases where there is more than one answer, just draw one. . с ору P aste [] Previous NE Draw the most stable resonance form for the intermediate in the following electrophilic substitution reaction. OH OH CH3 CH3 CH2 H3PO4 CH3 H3C...
7. For the following substitution reactions predict the product(s) showing stereochemistry only if is of revelance...
7. For the following substitution reactions predict the product(s) showing stereochemistry only if is of revelance. Also comment on what type reaction: S1 or SN2. Finally is the starting material and product optically active or inactive? Explain! CH, OH HBr CN CH3CH2CH3 HO HBr CN 1 CI CH3CH2CH3 НО HBr CH Br H3C
Nucleophilic Acyl Substitution Nucleophilic Acyl Substitution is a major reaction for acids and acid derivatives. This is the reaction that converts one derivative into another. The substitution can occur in basic or acidic condition, depending on a derivative. Nucleophilic Acyl Substitution in Basic Conditions-general mechanism NUCLEOPHILIC ATTACK LOSS OF A LEAVING GROUP Nue Nuc Nuc Note: in cases when the nucleophile is neutral (H20, ROH,RNHzl, the mechanism includes one more step: deprotonation of an already attached Nuc: group by another...
Name the type of reaction, reactant (functional group) and product
(functional group) of the following:
-Acid/base
-Addition
-Combustion
-Elimination
-Substitution
material for reactions 1 and 2) H3C— CH reaction 1 Br Br HO CH2=CH2 HC-CH2 HC-CH2 reaction 2 Br reaction 3 CH2 H3C- H2C= CH2 reaction 4 C OH reaction 5 - HC-CH2 H3C— CH Lei reaction 6 HEC OCH HEC OH HUC CNH,
Need asap please help
A. Which of A) and Please predict the Nuc- will pts) u a sN2 reaction? (1pt most readily? (1pt) (1pt) rea most sN1 reaction Gr2 reaction an an undergo sN2 undergo favor Nuc- that w (6 products factors Nuc- light strong strong strong compounds and compounds B) following Br2 Br2 experimental (halide) and and KMno4 the halide halide following 1. the KMno4 the of C2H4 are KMno4 czHA substrate C6H6 CH44 What Tertiary Primary 3, (CH3)3CCH2I...
Question 17 Which S N2 reaction will occur most rapidly in a mixture of water and ethanol? A. Br + CH3CH2-F- CH3CH2-Br + F B.1+ CH3CH2-C1 CH3CH2-1 + CI" C.1+ CH3CH2-Br CH3CH2-1 + Br" D. Br+ + CH3CH2-C1- CH3CH2-Br + Cl- E.1 + CH3CH2-F- CH3CH2-1 + F Question 18 Which nucleophilic substitution reaction is not likely to occur? A. 1- + CH3CH2-OH CH3CH2-1 + OH- B. OH + CH3CH2-C1 CH3CH2-OH + CI- C.1- + CH3CH2-Br CH3CH2-1 + Br- D.CH30- +...
need help with 14-21
Stereochemistry of the Su2 reaction In the Sn2 reaction the tetrahedral carbon center is inverted. We describe the mechanism as nudeophilic (Nuc) back side attack; the leaving group (LG) is leav ing from the front side. Generally, the LG and the Nucare electron rich so it would be unfavorable for them to react from the same side (charge repuls ion). The geometry of the carbon at the transition state is trigonal planar. 14) Label the 2-bromobuta...
1) State which of the electrophiles given below will react
preferentially by i) SN1, ii) by SN2, or iii) capable of reacting
by either of the two mechanisms depending on the given conditions.
How can you affect those conditions to favour SN1 or SN2? Reason
your predictions based on the structures of the compounds. Br-CH3,
Br-CH2CH3, Br-CH(CH3)2, Br-C(CH3)3, Br-CH2-C5H6; C5H6 = phenyl
Introduction Alkyl halides can be prepared from alcohols by reactions with hydrogen halides (HCI, HBr, or HI) via...
1. What is the IUPAC name for the following molecule? 2. What is the IUPAC name for the following molecule? 3. Which of the following is most reactive in nucleophilic acyl substitution reactions? HO 4. What is the major organic product of the following reaction? SOCI2 HO но HS ClI ClI 5. What is the major organic product of the following reaction? CI H2O OH ClI Ho HO HO ClI
1. Predict the major substitution product(s) for the following reactions. Include stereochemistry if appropriate. You may assume an aqueous workup is performed after each reaction. 1. Nah, DMF ТОН 2. Mel BrMg-Ph KCN 16 { ad ton ot MeOH HD Na Br Me DMSO EtOH Br ~ Br DMSO * Me OH LNH2 M HO Me-S (1 equiv) Me DMF
Draw the least stable resonance form for the intermediate in the following electrophilic substitution reaction. NO2 NO2 Brz/ FeBrz Br . You do not have to consider stereochemistry. Include all valence lone pairs in your answer. • In cases where there is more than one answer, just draw one. . с ору P aste [] Previous NE Draw the most stable resonance form for the intermediate in the following electrophilic substitution reaction. OH OH CH3 CH3 CH2 H3PO4 CH3 H3C...
7. For the following substitution reactions predict the product(s) showing stereochemistry only if is of revelance. Also comment on what type reaction: S1 or SN2. Finally is the starting material and product optically active or inactive? Explain! CH, OH HBr CN CH3CH2CH3 HO HBr CN 1 CI CH3CH2CH3 НО HBr CH Br H3C
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