Homework Answers
Overall reaction is an example for Electrophilic Addition. Initially cyclic iodoniium ion formed. Then ring opening by H2O to give halohydrin.
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show mechanism (below) using I-Br instead of X+
the nucleophile. Mechanism 10.4 Addition of X and...
Draw curved arrows to show the movement of electrons in this step of the mechanism.
Electrophilic addition of hypohalous acids to alkenes yields a 1,2-haloalcohol called a halohydrin. Halohydrin formation, however, does not result from the addition of HO-Br, for example. Instead the addition is done indirectly by reaction of the alkene with Br2 in the presence of water. The reaction also works with Cl2 to give chlorohydrins instead of bromohydrins. The reaction proceeds through a cyclic intermediate known as a bromonium ion. In the second step of the reaction, water is the nucleophile and reacts with the...
2 problems REVIEW Topics [References) CH HC OCH Br2 CH3 B H3C CH,OH H₂C CH₂ Electrophilic...
2 problems
REVIEW Topics [References) CH HC OCH Br2 CH3 B H3C CH,OH H₂C CH₂ Electrophilic addition of hypohalous acids to alkenes yields a 1,2-haloalcohol called a halohydrin. Halohydrin formation, however, does not result from the addition of HOBr, for example. Instead the addition is done indirectly by reaction of the alkene with Br, in the presence of water. The reaction also works with Cl2 to give chlorohydrins instead of bromohydrins. The reaction proceeds through a cyclic intermediate known as...
Give products. Be sure to show stereochemistry where appropriate The net result is anti addition -...
Give products. Be sure to show stereochemistry where
appropriate
The net result is anti addition - the two Br add to opposite faces of the Cl_2 can also be used; F_2 is too reactive, I_2 not reactive enough. Give products. Be sure to show stereochemistry where appropriate. Other species such as water can act as nucleophile; e.g. Halohydrin formation can be thought of as following Markovnikov Br^+ and OH^- instead of H and X
11. a) Provide the two substituenproductsforthe followingSNI reaction: (6…) OH b) Show the mechanism for the...
11. a) Provide the two substituenproductsforthe followingSNI reaction: (6…) OH b) Show the mechanism for the formation of the 1.2 and 1.4-addition products sho reaction below: (10 points) H-Br c) Using curved arrows, show the product of the following Diels-Alder r mechanism for its formation:(9 points)
show the mechanism with curved arrows for the two transformations shown below using H30 plus as...
show the mechanism with curved arrows for the two transformations
shown below using H30 plus as a catalyst
3. Show the mechanism (curved arrows) for the two transformations shown below. Use H30 as a catalyst. mechanism 1 mechanism 2 OH НО OH HO OH Page 2 of 4
Only using E1 and E2 and please show mechanism. Thank you. Determine the major elimination product(s)...
Only using E1 and E2 and please show mechanism. Thank
you.
Determine the major elimination product(s) for each of the following reactions. addition, please state the mechanism that is employed in the formation product. (12 points) HO H2SO4 Br NaOC(CH3)3 CH3OH CH3OH Heat
of acid ca +HCI 6. Show the complete mechanism of formation of the product below. Br...
of acid ca +HCI 6. Show the complete mechanism of formation of the product below. Br Он Mg +1. H 2. HCI Etz0
Draw reaction mechanism using arrows. Please indicate nucleophile, electrophile, products, show intermediate structure a...
Draw reaction mechanism using arrows.
Please indicate nucleophile, electrophile, products, show
intermediate structure and name (please show which carbon carriers
charges if possible), if anti/syn chemistry is involved
please indicate “anti” or “syn” at the end of the reaction
equation.
Please name the product.
53) Reaction of the following with HBr in electrophilic addition
reactions
Please indicate “follow Markovnikov’s rule” or “not follow
Markovnikov’s rule”. (If hydride shift is possible, please consider
it and show it in your reaction)
yo...
Consideran i mechanism for the reaction of bromocyclopentane with hydroxide as shown below. Which elementary step...
Consideran i mechanism for the reaction of bromocyclopentane with hydroxide as shown below. Which elementary step or sequence of steps from the list below would outline the step(s) for an El mechanism? Н. HH E1 + OH Η. Η Η H H (1) + B HHH Η. Η -Н (2) ПВ + Br H. H H HO: (3) (В HOB Η. Η H HO Н. н H HO (3) . iB + H,0 + Br н Н H НО (4)...
In many addition reactions we have to think about the regiochemical preference of how the two...
In many addition reactions we have to think about the regiochemical preference of how the two new groups will add across a double bond. Draw the major product of each transformation. HBr HBr ΒΡΟ For each transformation, which set of reagents would produce each product shown below in the highest yield? - In the box below, draw a curved-arrow reaction mechanism for the following reaction. Show all bond cleavage and formation steps. Your answer should be written in the box...
2 problems
REVIEW Topics [References) CH HC OCH Br2 CH3 B H3C CH,OH H₂C CH₂ Electrophilic addition of hypohalous acids to alkenes yields a 1,2-haloalcohol called a halohydrin. Halohydrin formation, however, does not result from the addition of HOBr, for example. Instead the addition is done indirectly by reaction of the alkene with Br, in the presence of water. The reaction also works with Cl2 to give chlorohydrins instead of bromohydrins. The reaction proceeds through a cyclic intermediate known as...
Give products. Be sure to show stereochemistry where
appropriate
The net result is anti addition - the two Br add to opposite faces of the Cl_2 can also be used; F_2 is too reactive, I_2 not reactive enough. Give products. Be sure to show stereochemistry where appropriate. Other species such as water can act as nucleophile; e.g. Halohydrin formation can be thought of as following Markovnikov Br^+ and OH^- instead of H and X
11. a) Provide the two substituenproductsforthe followingSNI reaction: (6…) OH b) Show the mechanism for the formation of the 1.2 and 1.4-addition products sho reaction below: (10 points) H-Br c) Using curved arrows, show the product of the following Diels-Alder r mechanism for its formation:(9 points)
show the mechanism with curved arrows for the two transformations
shown below using H30 plus as a catalyst
3. Show the mechanism (curved arrows) for the two transformations shown below. Use H30 as a catalyst. mechanism 1 mechanism 2 OH НО OH HO OH Page 2 of 4
Only using E1 and E2 and please show mechanism. Thank
you.
Determine the major elimination product(s) for each of the following reactions. addition, please state the mechanism that is employed in the formation product. (12 points) HO H2SO4 Br NaOC(CH3)3 CH3OH CH3OH Heat
of acid ca +HCI 6. Show the complete mechanism of formation of the product below. Br Он Mg +1. H 2. HCI Etz0
Draw reaction mechanism using arrows.
Please indicate nucleophile, electrophile, products, show
intermediate structure and name (please show which carbon carriers
charges if possible), if anti/syn chemistry is involved
please indicate “anti” or “syn” at the end of the reaction
equation.
Please name the product.
53) Reaction of the following with HBr in electrophilic addition
reactions
Please indicate “follow Markovnikov’s rule” or “not follow
Markovnikov’s rule”. (If hydride shift is possible, please consider
it and show it in your reaction)
yo...
Consideran i mechanism for the reaction of bromocyclopentane with hydroxide as shown below. Which elementary step or sequence of steps from the list below would outline the step(s) for an El mechanism? Н. HH E1 + OH Η. Η Η H H (1) + B HHH Η. Η -Н (2) ПВ + Br H. H H HO: (3) (В HOB Η. Η H HO Н. н H HO (3) . iB + H,0 + Br н Н H НО (4)...
In many addition reactions we have to think about the regiochemical preference of how the two new groups will add across a double bond. Draw the major product of each transformation. HBr HBr ΒΡΟ For each transformation, which set of reagents would produce each product shown below in the highest yield? - In the box below, draw a curved-arrow reaction mechanism for the following reaction. Show all bond cleavage and formation steps. Your answer should be written in the box...
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