Question

1. Which kind of solvent would be preferred for E2 reactions: polar protic, polar aprotic, or nonpolar? 2. What happens to the rate of the reaction at right: a. If you double the concentration of alkyl halide? b. If you double the concentration of the base? c. If you quadruple the concentration of the alkyl halide and half the concentration of the base? 3. The following molecule is a stereoisomer of the example used in the Who Gives a Darn? example. Using a mechanism with electron pushing arrows, draw the formation of two distinct elimination products that can form from this reaction and identify which one will be the major product. 4. The following molecule is treated with potassium tert-butoxide and only one product forms: a. Is the product likely to be a substitution or elimination product and why? b. Add the two possible protons that can be eliminated from the starting material above. c. Using your model as a guide, predict which elimination product forms, and explain why it can form, but the other elimination product cannot. d. Draw a mechanism to show formation of the product you indicated in part b. 5. Each of the following reactions could result in substitution or elimination products depending on the starting materials and the base/nucleophile given. • Draw the major product that forms for each reaction.

          1. Which kind of solvent would be preferred for E2 reactions: polar protic, polar aprotic, or nonpolar?
2. What happens to the rate of the reaction at right:
a. If you double the concentration of alkyl halide?
b. If you double the concentration of the base?
c. If you quadruple the concentration of the alkyl halide and half the concentration of the base?
3. The following molecule is a stereoisomer of the example used in the Who Gives a Darn? example. Using a mechanism with electron pushing arrows, draw the formation of two distinct elimination products that can form from this reaction and identify which one will be the major product.
4. The following molecule is treated with potassium tert-butoxide and only one product forms:
a. Is the product likely to be a substitution or elimination product and why?
b. Add the two possible protons that can be eliminated from the starting material above.
c. Using your model as a guide, predict which elimination product forms, and explain why it can form, but the other elimination product cannot.
d. Draw a mechanism to show formation of the product you indicated in part b.
5. Each of the following reactions could result in substitution or elimination products depending on the starting materials and the base/nucleophile given.
• Draw the major product that forms for each reaction.

1. Which kind of solvent would be preferred for E2 reactions: polar protic, polar aprotic, or nonpolar?
2. What happens to the rate of the reaction at right:
a. If you double the concentration of alkyl halide?
b. If you double the concentration of the base?
c. If you quadruple the concentration of the alkyl halide and half the concentration of the base?
3. The following molecule is a stereoisomer of the example used in the Who Gives a Darn? example. Using a mechanism with electron pushing arrows, draw the formation of two distinct elimination products that can form from this reaction and identify which one will be the major product.
4. The following molecule is treated with potassium tert-butoxide and only one product forms:
a. Is the product likely to be a substitution or elimination product and why?
b. Add the two possible protons that can be eliminated from the starting material above.
c. Using your model as a guide, predict which elimination product forms, and explain why it can form, but the other elimination product cannot.
d. Draw a mechanism to show formation of the product you indicated in part b.
5. Each of the following reactions could result in substitution or elimination products depending on the starting materials and the base/nucleophile given.
• Draw the major product that forms for each reaction.

Added by Lorenzo R.

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