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- a. Label the reactive features of the following reactants, select the most reactive feature, then write and highlight what it needs. Also, state if a carbocation, carbon radical, or carbanion will start to develop, and/or if aromatic character will be lost as a result of a reaction between these molecules. benzenesulfonic acid + Cl, and FeCl; b. Use mechanism arrows to illustrate the reaction that occurs. If applicable, use stabilization resources to deal with the carbocation, carbon radical, or carbanion that starts to develop during the reaction, and draw the structure of any resonance- stabilized intermediate. Continue labelling and diagramming the reaction until you find the major stable product(s). Finally, state the stereochemistry of the major product(s) and use either Fisher projection or perspective formula representations to illustrate that stereochemistry.20. a. Label the reactive features of the following reactants, select the most reactive feature, then write and highlight what it needs. Also, state if a carbocation, carbon radical, or carbanion will start to develop, and/or if aromatic character will be lost as a result of a reaction between these molecules. (E)-4,5-dimethyloct-4-ene + HBr and H2O2 b. Use mechanism arrows to illustrate the reaction that occurs. If applicable, use stabilization resources to deal with the carbocation, carbon radical, or carbanion that starts to develop during the reaction, and draw the structure of any resonance- stabilized intermediate. Continue labelling and diagramming the reaction until you find the major stable product(s). Finally, state the stereochemistry of the major product(s) and use either Fisher projection or perspective formula representations to illustrate that stereochemistry.17. a. Label the reactive features of the following reactants, select the most reactive feature, then write and highlight what it needs. Also, state if a carbocation, carbon radical, or carbanion will start to develop, and/or if aromatic character will be lost as a result of a reaction between these molecules. HN-C -CH3 with Cl, and FeCl, b. Use mechanism arrows to illustrate the reaction that occurs. If applicable, use stabilization resources to deal with the carbocation, carbon radical, or carbanion that starts to develop during the reaction, and draw the structure of any resonance- stabilized intermediate. Continue labelling and diagramming the reaction until you find the major stable product(s). Finally, state the stereochemistry of the major product(s) and use either Fisher projection or perspective formula representations to illustrate that stereochemistry.
- For each reaction, decide whether the reaction is a redox reaction, acid-base reaction, electrophile- nucleophile, or something else. One can begin to identify the type of reaction by looking to see if oxidation numbers of atoms that take part in the reaction change during the reaction. You will need to draw out the structures. a. If the reaction is considered an acid- base reaction, draw out the full mechanism for the reaction. Be sure to indicate which compound is the acid, base, and conjugate acid and base (where possible). b. If the reaction is considered a redox reaction, be sure to indicate which species are oxidized and which are reduced. c. For every reaction you will need to justify your identification of the type of reaction.14. a. Label the reactive features, highlight the most reactive one, then highlight what it needs. Also, state if the reaction will start to create a carbocation, carbon radical, or carbanion, or will cause loss of aromatic character. If a carbocation, carbon radical, or carbanion starts to develop, label where that will occur. butanone + CH.MgBr followed by acid b. Use mechanism arrows to illustrate the reaction that occurs. c. If applicable, use stabilization resources to deal with the carbocation, carbon radical, or carbanion that starts to develop during the reaction, and draw the structure of any resonance-stabilized intermediate. d. Continue labeling and diagramming the reaction until you find the major stable product(s). e. Finally, state the stereochemistry of the major product(s) and use either Fisher projection or perspective formula representations to illustrate that stereochemistry.13. a. Label the reactive features of the following reactants, select the most reactive feature, then write and highlight what it needs. Also, state if a carbocation, carbon radical, or carbanion will start to develop, and/or if aromatic character will be lost as a result of a reaction between these molecules. phenol + Cl, and FeCl; b. Use mechanism arrows to illustrate the reaction that occurs. If applicable, use stabilization resources to deal with the carbocation, carbon radical, or carbanion that starts to develop during the reaction, and draw the structure of any resonance- stabilized intermediate. Continue labelling and diagramming the reaction until you find the major stable product(s). Finally, state the stereochemistry of the major product(s) and use either Fisher projection or perspective formula representations to illustrate that stereochemistry.
- Complete the generic mechanism for an electrophilic aromatic substitution (EAS) reaction using E as the electrophile, and show how the sigma complex is resonance stabilized. Use curved arrows to show the mechanism and the conversion between resonance structures. Make sure to add any missing charges. Note the use of a generic base (B) in the last step. Then, label the reaction coordinate diagram for a typical EAS reaction by correctly placing the structures on the diagram. Step 1: add a curved arrow. Select / |||||| Draw CH Rings Groups More Erase slow WEFor each of the following, write the major product(s) and then draw out each step in the mechanism using curved arrows. Show ALL lone pair electrons and formal charges. Redraw ALL molecules as to show explicitly ALL bonds being broken or formed. Identify the molecular orbital (HOMO) of the nucleophile and the molecular orbital (LUMO) of electrophile involved in the nucleophilic attack. MO diagrams are not necessary..18. a. Label the reactive features, highlight the most reactive one, then highlight what it needs. Also, state if the reaction will start to create a carbocation, carbon radical, or carbanion, or will cause loss of aromatic character. If a carbocation, carbon radical, or carbanion starts to develop, label where that will occur. 3-bromo-3-methylhexane + potassium hydroxide in THF b. Use mechanism arrows to illustrate the reaction that occurs. c. If applicable, use stabilization resources to deal with the carbocation, carbon radical, or carbanion that starts to develop during the reaction, and draw the structure of any resonance-stabilized intermediate. d. Continue labeling and diagramming the reaction until you find the major stable product(s). e. Finally, state the stereochemistry of the major product(s) and use either Fisher projection or perspective formula representations to illustrate that stereochemistry.
- For the reduction of 2-methyl cyclohexanone to methyl cyclohexanol using NaBH4... 1. What is the reaction mechanism (draw curved arrows)? What is the nucleophile? Electrophile? 2. Using your reaction mechanism from the above question, sketch the reaction coordinatediagram. What does the transition state most likely look like? What is the rate-determining step?[Review Topics] [References) Draw a structural formula for the major product of the acid-base reaction shown. H2N. HCI (1 mole) (1 mole) You do not have to consider stereochemistry. • Do not include counter-ions, e.g., Na", I, in your answer. • In those cases in which there are two reactants, draw only the product from the compound that reacts. C P. opy eate20. a. Label the reactive features, highlight the most reactive one, then highlight what it needs. Also, state if the reaction will start to create a carbocation, carbon radical, or carbanion, or will cause loss of aromatic character. If a carbocation, carbon radical, or carbanion starts to develop, label where that will occur. o-cresol + 2-methylpropanoyl chloride + AICI3 b. Use mechanism arrows to illustrate the reaction that occurs. c. If applicable, use stabilization resources to deal with the carbocation, carbon radical, or carbanion that starts to develop during the reaction, and draw the structure of any resonance-stabilized intermediate. d. Continue labeling and diagramming the reaction until you find the major stable product(s). e. Finally, state the stereochemistry of the major product(s) and use either Fisher projection or perspective formula representations to illustrate that stereochemistry.