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9. Write the stereochemistry of the product that results from following reactions. Is the product optically...
Stereochemistry of Electrophilic Addition Reactions of Alkenes 4. Predict the product of the following reaction. Consider...
Stereochemistry of Electrophilic Addition Reactions of Alkenes 4. Predict the product of the following reaction. Consider the stereochemistry of the product Br Br. cis-2-butene trans-2-butene + сна, CH2Cl2 5. Predict the product of the reaction. Is the product a terminal or internal alkyne? Br 1. Excess NaNH 2. H,O Br
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
For the following substitution reactions predict the products showing stereochemistry only if is of relevance. Also...
For the following substitution reactions predict the
products showing stereochemistry only if is of relevance. Also
comment on what type of reaction: Sn1 or Sn2. Finally is the
starting material and product optically active or inactive?
Explain.
CH3CH2CH3 НО HBr CH-Br НЫС
15. Provide mechanisms to explain the stereochemistry of products observed from the addition of bromine (Br2) to cis- an...
15. Provide mechanisms to explain the stereochemistry of products observed from the addition of bromine (Br2) to cis- and trans-but-2-eno. Because I know form two products from the cis isomer but only one from the trans? By What cis- or trans-but-2-eno products are not optically active?
Write down the structural formula for the products of the following reactions, indicating proper stereochemistry (Hint:...
Write down the structural formula for the products of the following reactions, indicating proper stereochemistry (Hint: Pay attention to the stereochemical outcome of bromination reaction with a C-C double bond, remembering that bromination in dichloromethane solvent goes via trans or anti- addition) 4. Br2 in DCM Br, in DCM
What stereoisomers are obtained from the following reactions? (a) 1-butene + H2O/H3O+ (b) (Z)-3-heptene + Br2...
What stereoisomers are obtained from the following reactions? (a) 1-butene + H2O/H3O+ (b) (Z)-3-heptene + Br2 (c) cyclohexene + HBr (d) (E)-3-hexene + Br2
Provide the major product(s) for the following reactions: Show Stereochemistry when necessary (9 points total) HBr...
Provide the major product(s) for the following reactions: Show Stereochemistry when necessary (9 points total) HBr (1 equivalent) HBr (2 equivalents) Br2 Brz (1 equivalent) CH,CI, (2 equivalents) CH,CI, HO 1) disyamylborane HgSo., H2SO4 2) H0, NaOH, H2O Bonus: Provide the major product(s) for the following reactions: Show Stereochemistry when necessary (4 points total) 1) NaNH, (1) NaNH, 2) (CH),CHCH,Br 2) (CH),CHCH,Br 3) H, 3) L, NH, Lindlar's catalyst 1) NaNH, 2) EtBr 3) Hz, Pd/C 1) NaNH, 2) EtBr...
for c and d 2. Indicate the preferred product for the following reactions. (Include stereochemistry) HBr,...
for c and d
2. Indicate the preferred product for the following reactions. (Include stereochemistry) HBr, CH 0OCH 1. PhCO,H 2. H'/CH OH H/KMnO Br2, H20
Which of the following compounds can have cis and trans isomers? 2-Methyl-2-butene Propene 0 1-Butene 1,2-Dichloro-1-Bu...
Which of the following compounds can have cis and trans isomers? 2-Methyl-2-butene Propene 0 1-Butene 1,2-Dichloro-1-Bu What is the correct molecular formula of 2,4-Diethyltouleno OCHA 0 C₂ H₂2 G H C:oH20 18 Which of the following compounds can have cis and trans isomers? 1-Butene 2-Methyl-2-butene 1,2-Dichloro-1-Butene Propene CH3CHBr2 is obtained from O Reaction of ethyne with one mole of HBr O Reaction of ethyne with one mole of Br2 Reaction of ethyne with two moles of Br2 Reaction of ethyne...
1. Give the major product of the following reactions, write N.R. if no reaction happens. Indicate the stereochemistry if...
1. Give the major product of the following reactions, write N.R.
if no reaction happens. Indicate the stereochemistry if
necessary:
Jone's reagent OH OH Ph~ 1. PBr3 2. NaCN, THE conc. H2S04, n D -OH ou Naci 0 °C 0°C Ph conc. HBr Он /. heat
Stereochemistry of Electrophilic Addition Reactions of Alkenes 4. Predict the product of the following reaction. Consider the stereochemistry of the product Br Br. cis-2-butene trans-2-butene + сна, CH2Cl2 5. Predict the product of the reaction. Is the product a terminal or internal alkyne? Br 1. Excess NaNH 2. H,O Br
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
For the following substitution reactions predict the
products showing stereochemistry only if is of relevance. Also
comment on what type of reaction: Sn1 or Sn2. Finally is the
starting material and product optically active or inactive?
Explain.
CH3CH2CH3 НО HBr CH-Br НЫС
Write down the structural formula for the products of the following reactions, indicating proper stereochemistry (Hint: Pay attention to the stereochemical outcome of bromination reaction with a C-C double bond, remembering that bromination in dichloromethane solvent goes via trans or anti- addition) 4. Br2 in DCM Br, in DCM
Provide the major product(s) for the following reactions: Show Stereochemistry when necessary (9 points total) HBr (1 equivalent) HBr (2 equivalents) Br2 Brz (1 equivalent) CH,CI, (2 equivalents) CH,CI, HO 1) disyamylborane HgSo., H2SO4 2) H0, NaOH, H2O Bonus: Provide the major product(s) for the following reactions: Show Stereochemistry when necessary (4 points total) 1) NaNH, (1) NaNH, 2) (CH),CHCH,Br 2) (CH),CHCH,Br 3) H, 3) L, NH, Lindlar's catalyst 1) NaNH, 2) EtBr 3) Hz, Pd/C 1) NaNH, 2) EtBr...
for c and d
2. Indicate the preferred product for the following reactions. (Include stereochemistry) HBr, CH 0OCH 1. PhCO,H 2. H'/CH OH H/KMnO Br2, H20
Which of the following compounds can have cis and trans isomers? 2-Methyl-2-butene Propene 0 1-Butene 1,2-Dichloro-1-Bu What is the correct molecular formula of 2,4-Diethyltouleno OCHA 0 C₂ H₂2 G H C:oH20 18 Which of the following compounds can have cis and trans isomers? 1-Butene 2-Methyl-2-butene 1,2-Dichloro-1-Butene Propene CH3CHBr2 is obtained from O Reaction of ethyne with one mole of HBr O Reaction of ethyne with one mole of Br2 Reaction of ethyne with two moles of Br2 Reaction of ethyne...
1. Give the major product of the following reactions, write N.R.
if no reaction happens. Indicate the stereochemistry if
necessary:
Jone's reagent OH OH Ph~ 1. PBr3 2. NaCN, THE conc. H2S04, n D -OH ou Naci 0 °C 0°C Ph conc. HBr Он /. heat
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