沒有 【段考】高三英文上學期 權限，請先開通．

1. The Keq for the interconversion for the two chair forms of methylcyclohexane at 25 °C is 18. What % of the chair conformations feature an axial methyl group? (A) 95 (B) 75 (C) 50 (D) 25 (E) 5

2. What is the name of the major organic product of the following reaction?  (A) 3,3-dimethyl-1-butanol (B) 3,3-dimethyl-2-butanol (C) 2,3-dimethyl-2-butanol (D) 2,3-dimethyl-1-butanol (E) 4-methyl-2-petanol

3. How many diastereomer(s) exist for the compound below?  (A) 2 (B) 4 (C) 6 (D) 8 (E) 0

4. Which of the following statements is (are) true for the Diels-Alder reaction? (A) When the diene is electron-rich, the reaction works best when the dienophile contains one or more electron-withdrawing groups conjugated to its C=C. (B) Substituents which are cis in the dienophile remain cis in the product. (C) Dienes which cannot achieve an s-cis conformation do not react in Diels-Alder reactions. (D) Secondary orbital interactions typically cause the endo product to be favored kinetically over the exo. (E) All of the above.

5. What is the major product of the following reaction?

6. Which sequence of reagents works best to convert 3-hexene to 3-hexyne? (A) 1. HCl 2. NaNH2 (B) 1. BH3．THF 2. HO- , H2O2 3. NaNH2 (C) 1. NaNH2 2. HI 3. H3O+ (D) 1. Br2, CH2Cl2 2. NaNH2 (excess) (E) 1. Cl2, CH2Cl2 2. NaCN(excess)

7. Which of the following technique(s) can readily distinguish between: (A) NMR (B) IR (C) MS (D) A and B (E) A and C

8. What is the major product of the following reaction?

9. What is the major product of the following reaction?

10. What is the major product from the following rearrangement?

108年 - 2019臺北市市立永春高中高三108 上學期英文第一次段考(期中考)其他#89677

108年 - 2019高雄市市立六龜高中高三108 上學期英文第三次段考(期末考)龍騰#89659

108年 - 2019高雄市市立六龜高中高三108 上學期英文第二次段考(期中考)龍騰#89653

108年 - 2019高雄市市立六龜高中高三108 上學期英文第一次段考(期中考)龍騰#89652

106年 - 2017花蓮縣國立花蓮高工高三106 上學期英文第三次段考(期末考)其他#91349

106年 - 2017臺南市國立北門高中高三106 上學期英文第二次段考(期中考)其他#91319

106年 - 2017高雄市私立樹德家商高三106 上學期英文第二次段考(期中考)遠東#91317

106年 - 2017高雄市私立樹德家商高三106 上學期英文第三次段考(期末考)遠東#91307

106年 - 2017新竹縣私立內思高工高三106 上學期英文第一次段考(期中考)遠東#91306

106年 - 2017高雄市私立樹德家商高三106 上學期英文第一次段考(期中考)遠東#91304