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4) . For the following reaction, choose the correct product(s). 5pts HCI ? CI A B...
Consider the reaction of 2-methyl-1,3-cyclohexadiene with HCI. Assuming that the reaction takes place at a very...
Consider the reaction of 2-methyl-1,3-cyclohexadiene with HCI. Assuming that the reaction takes place at a very low temperature: (a) draw the intermediate and product structures, indluding any formnal charges. more stable resonance formless stable resonance form HCI CI CI Scroll down for parts (b) and (c) (b) What is the major product of the reaction at very low temperatures? O Both products are formed in equal amounts. O The 1,2-addition product O The 1,4-addition product. (c) Is the reaction under...
ASAP 6.(8) a. The 1,2 addition product of the reaction is shown. Draw the 1,4 addition...
ASAP
6.(8) a. The 1,2 addition product of the reaction is shown. Draw the 1,4 addition product. HBr 1,2 1,4 b. Which is more stable? Circle one: the 1,2 product, the 1.4 product. c. Which product is favored at low temperatures? Circle one: the 1.2 product, the 14 product d. "The proximity effect is used to account for the formation of which product? Circle one: the 1,2 product, the 1.4 product. 7. (5) The pesticide chlordane, sold starting in 1948,...
CHM 260 (Fall 2019) HW #4 (conjugated alkenes/aromatic nomenclature and reactivity) *Due in class Monday, 10/28*...
CHM 260 (Fall 2019) HW #4 (conjugated alkenes/aromatic nomenclature and reactivity) *Due in class Monday, 10/28* 1) Consider the reactions between hexa-1,4-diene and HBr (reaction A) and hexa-2,4-diene and HBr (reaction B) as shown below: (6 pts total) HBr HBO ? ? Reaction A Reaction B - which reaction will involve a carbocation that can be stabilized by resonance? Briefly explain why. - write out the mechanistic steps for reaction of hexa-2,4-diene with HBr (hint: you only need to consider...
Consider the reaction of 2-methyl-1,3-cyclohexadiene with HCI.
Consider the reaction of 2-methyl-1,3-cyclohexadiene with HCI. Assuming that the reaction takes place at a very low temperature: (a) draw the intermediate and product structures, Including any formal charges. (b) What is the major product of the reaction at very low temperatures? Both products are formed in equal amounts. The 1,2-addition product. The 1,4-addition product. (c) Is the reaction under rate control or equilibrium control under the conditions stated above? The reaction is under rate control (kinetic). The reaction is under equilibrium control (thermodynamic). Unable to determine.
5. a) Draw the major 1,2-addition product and the major 1,4-addition product of each of the...
5. a) Draw the major 1,2-addition product and the major 1,4-addition product of each of the following reactions. Label each product as either the 1,2-addition product or 1,4-addition product and as either the thermodynamic or kinetic product. (12 pts) H" catalyst H catalyst b) Consider the reaction of a nucleophile with conjugated carbonyl. Provide an example of a nucleophile that would favor the 1,2-addition product and explain why. Provide an example of a nucleophile that would favor the 1,4-addition product...
Please answer 5-8. 5. What is the product formed by the following reaction? (5pts) Н.С. CH3...
Please answer 5-8.
5. What is the product formed by the following reaction? (5pts) Н.С. CH3 Н4С CHE H/Pd 6. Find the product(s) for the following reaction. Draw all stereoisomers using wedge and dash. How many optical active compounds can you identify. (5pts) HO/H2SO4 7. Find the product(s) for the following reaction. Draw all stereoisomers using wedge and dash. (5pts) CH3 Н.С., CH2 HCI 8. Find the product(s) for the following reaction. Draw all stereoisomers using wedge and edge. What...
сн, Нас 12-addition products (direct addition) CH2 CH3 Н,с Н-с CH CI HCI CH2 Cн Н.с 1,4-addition products (conjuga...
сн, Нас 12-addition products (direct addition) CH2 CH3 Н,с Н-с CH CI HCI CH2 Cн Н.с 1,4-addition products (conjugate addition) Cн CH3 Нас Н.С CI Electrophilic addition to an alkene proceeds via Markovnikov regiochemistry due to the formation of the more stable carbocation intermediate. In the case of conjugated dienes, that is dienes that are separated by one sigma bond, the carbocation that is formed is stabilized additionally by resonance. Addition of the nucleophile to the carbocation intermediate can therefore...
5:43 PM Thu Oct 31 29% Chem2542 Assignment-6.doc 1. Provide the structure of diene and dienophile...
5:43 PM Thu Oct 31 29% Chem2542 Assignment-6.doc 1. Provide the structure of diene and dienophile required for the synthesis of the following compound via Diels-Alder reaction. Ph сно сно 2. The following a,b-unsaturated ketone can react with nucleophilic reagents to yield 1,2-addition as well as 1,4-addition (conjugate addition) products depending on the nucleophilic reagent. Provide the structure of the major primary 1,2-addition or 1,4 addition product formed in each reaction 1. CH,MgCI 2. HC 1. LIAIH 2. HC 1....
Determine the product of the following reaction. HCI ? ОН -CI ОН CI С- ОН None...
Determine the product of the following reaction. HCI ? ОН -CI ОН CI С- ОН None of these products will be formed. Coon
4. Reaction Fill-ins! Prediet the product(s) OR starting material of the following reactions. Remember, Hydride shifts...
4. Reaction Fill-ins! Prediet the product(s) OR starting material of the following reactions. Remember, Hydride shifts are possible ifwhen a more stable carbocation can exist (depending on reaction mechanism)! Put your answers in the indicated boxes H,SO, (cat), H,о а. 1,2-product 1,4-product Br Br HBr b. Br Minor produt Major product Minor product HCI C. 1,2-product 14-product HI Он MAJOR prod. Minor prod e. Draw the FULL electron-pushing mechanism for the reaction in part a above. INCLUDING ALL resonance contributors....
Consider the reaction of 2-methyl-1,3-cyclohexadiene with HCI. Assuming that the reaction takes place at a very low temperature: (a) draw the intermediate and product structures, indluding any formnal charges. more stable resonance formless stable resonance form HCI CI CI Scroll down for parts (b) and (c) (b) What is the major product of the reaction at very low temperatures? O Both products are formed in equal amounts. O The 1,2-addition product O The 1,4-addition product. (c) Is the reaction under...
ASAP
6.(8) a. The 1,2 addition product of the reaction is shown. Draw the 1,4 addition product. HBr 1,2 1,4 b. Which is more stable? Circle one: the 1,2 product, the 1.4 product. c. Which product is favored at low temperatures? Circle one: the 1.2 product, the 14 product d. "The proximity effect is used to account for the formation of which product? Circle one: the 1,2 product, the 1.4 product. 7. (5) The pesticide chlordane, sold starting in 1948,...
CHM 260 (Fall 2019) HW #4 (conjugated alkenes/aromatic nomenclature and reactivity) *Due in class Monday, 10/28* 1) Consider the reactions between hexa-1,4-diene and HBr (reaction A) and hexa-2,4-diene and HBr (reaction B) as shown below: (6 pts total) HBr HBO ? ? Reaction A Reaction B - which reaction will involve a carbocation that can be stabilized by resonance? Briefly explain why. - write out the mechanistic steps for reaction of hexa-2,4-diene with HBr (hint: you only need to consider...
5. a) Draw the major 1,2-addition product and the major 1,4-addition product of each of the following reactions. Label each product as either the 1,2-addition product or 1,4-addition product and as either the thermodynamic or kinetic product. (12 pts) H" catalyst H catalyst b) Consider the reaction of a nucleophile with conjugated carbonyl. Provide an example of a nucleophile that would favor the 1,2-addition product and explain why. Provide an example of a nucleophile that would favor the 1,4-addition product...
Please answer 5-8.
5. What is the product formed by the following reaction? (5pts) Н.С. CH3 Н4С CHE H/Pd 6. Find the product(s) for the following reaction. Draw all stereoisomers using wedge and dash. How many optical active compounds can you identify. (5pts) HO/H2SO4 7. Find the product(s) for the following reaction. Draw all stereoisomers using wedge and dash. (5pts) CH3 Н.С., CH2 HCI 8. Find the product(s) for the following reaction. Draw all stereoisomers using wedge and edge. What...
сн, Нас 12-addition products (direct addition) CH2 CH3 Н,с Н-с CH CI HCI CH2 Cн Н.с 1,4-addition products (conjugate addition) Cн CH3 Нас Н.С CI Electrophilic addition to an alkene proceeds via Markovnikov regiochemistry due to the formation of the more stable carbocation intermediate. In the case of conjugated dienes, that is dienes that are separated by one sigma bond, the carbocation that is formed is stabilized additionally by resonance. Addition of the nucleophile to the carbocation intermediate can therefore...
5:43 PM Thu Oct 31 29% Chem2542 Assignment-6.doc 1. Provide the structure of diene and dienophile required for the synthesis of the following compound via Diels-Alder reaction. Ph сно сно 2. The following a,b-unsaturated ketone can react with nucleophilic reagents to yield 1,2-addition as well as 1,4-addition (conjugate addition) products depending on the nucleophilic reagent. Provide the structure of the major primary 1,2-addition or 1,4 addition product formed in each reaction 1. CH,MgCI 2. HC 1. LIAIH 2. HC 1....
Determine the product of the following reaction. HCI ? ОН -CI ОН CI С- ОН None of these products will be formed. Coon
4. Reaction Fill-ins! Prediet the product(s) OR starting material of the following reactions. Remember, Hydride shifts are possible ifwhen a more stable carbocation can exist (depending on reaction mechanism)! Put your answers in the indicated boxes H,SO, (cat), H,о а. 1,2-product 1,4-product Br Br HBr b. Br Minor produt Major product Minor product HCI C. 1,2-product 14-product HI Он MAJOR prod. Minor prod e. Draw the FULL electron-pushing mechanism for the reaction in part a above. INCLUDING ALL resonance contributors....
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