18. When 1 mole of anhydrous HCl is reacted with excess 1,3-pentadiene, both the 1,2 and the 1,4-addition products are formed. Which of the following structures shown below is the least likely to be one of these products? (Note: When a chiral carbon is formed in this reaction a racemic mixture results, only one of the two possible enantiomers is shown.)
(A)
(B)
(C)
(D)
(E)
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統計: A(0), B(0), C(0), D(1), E(1) #3437015
統計: A(0), B(0), C(0), D(1), E(1) #3437015