91影视

Use what the curved arrows tell you about electron movement to determine the product(s) of each reaction step.

Question: Draw the isomers for the following compounds and then name each one:

a. 2-methyl-2,4-hexadiene

b. 2,4-heptadiene

c. 1,3-pentadiene

Question: Which of the following are electrophiles, and which are nucleophiles?

Question: Identify the nucleophile and the electrophile in the following acid鈥揵ase reactions:

Question: a. Which of the monosubstituted cyclohexanes in Table 3.9 on p. 128 has a negative 鈭咷掳 for the conversion of an axial-substituted chair conformer to an equatorial-substituted chair conformer?

b.Which monosubstituted cyclohexane has the most negative 鈭咷掳 for this conversion?

c. Which monosubstituted cyclohexane has the greatest preference for an equatorial position?

d. Calculate 鈭咷掳 for the conversion of 鈥渁xial鈥� methylcyclohexane to 鈥渆quatorial鈥� methylcyclohexane at 25 掳C.

Draw curved arrows to show the movement of the electrons in the following reaction steps.

Which of the following parameters would be different for a reaction carried out in the presence of a catalyst compared with the same reaction carried out in the absence of a catalyst?

螖G掳, 螖H^鈥�, 螖E_a, 螖S^鈥�, 螖H掳,K_eq, 螖G^鈥�, 螖S掳,k

Draw curved arrows to show the movement of the electrons that result in the formation of the given product(s). (Hint: Look at the structure of the product to see what bonds need to be formed and broken in order to arrive at the structure of the desired product.)

Draw the structure of a hydrocarbon that has six carbon atoms and

a. three vinylic hydrogens and two allylic hydrogens.

b. three vinylic hydrogens and one allylic hydrogen.

c. three vinylic hydrogens and no allylic hydrogens.

Question: Determine the degree of unsaturation for hydrocarbons with the following molecular formulas:

a. C₂₀H₃₄ b. C₈H₁₆ c. C₁₂H₂₀ d. C₄₀H₅₆