四、請寫出下列各反應的生成物
18.
17.
16.
10. Which of the following compounds can undergo Diels-Alder reaction with maleic anhydride?(A) (B) (C) (D) (E)
9. Which statement is true for a chiral molecule?
(A) The molecule has an enantiomer.
(B) The molecule has a superimposable mirror image.
(C) The molecule may be a meso compound.
(D) The molecule is optical active.
8. What is the major product for the addition of Cl₂ to cis-2-butene?
(A) 2-chlorobutane (B) meso-2,3-dichlorobutane (C) racemic mixture of (2R,3R) and (2S,3S)-2,3-dichlorobutane
(D) 1,2-dichlorobutane
This is a large modal.