環狀化合物

86. Which of following structures presents the most stable conformation of cis-1-ethyl-2-isopropylcyclohexane? (A) (B)...
32. 下列化合物中，何者的環張力(ring strain)能量最小？ (A) cyclohexane (B) cyclobutane (C) cyclopentane (D) cyclooctane...
3. 下列化合物中，何者具有最高的莫耳燃燒熱(molar heat of combustion)？ (A) trans-1,2-dimethylcyclopentane (B) cis-1,2-d...
22. Which of the following Newman projection represents the most stable trans-1,2-dimethylcyclohexane? (A) (B) (C) (D) ...
3. Which one of the following structures represents a different compound from the other three? (A) 1 (B) 2 (C) 3 (D) 4 (...
48.請問下列何者為最穩定的構形(conformation)。(A)(B)(C)(D)
30. 下列 C6H10 異構物中何者最不穩定？ (A) (B) (C) (D) (E)
32. 下列二甲基環己烷化合物在最穩定的椅型結構中，何者的兩個甲基皆位於赤道位 (equatorial position)？ (A) (B) (C) (D) (E)

寬識(已上榜、感謝阿摩與前輩)