12. Which of the following would not have a C-H stretch at about 3050 cm-1? (A) 1-pentene (B) 2-pentene (C) 2,3-dimethyl-2-pentene (D) 2-methyl-2-pentene (E) 2,4-dimethyl-2-pentene

12. Which of the following would not have a C-H stretch at about 3050 cm^-1?
(A) 1-pentene
(B) 2-pentene
(C) 2,3-dimethyl-2-pentene
(D) 2-methyl-2-pentene
(E) 2,4-dimethyl-2-pentene

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統計： A(0), B(1), C(10), D(1), E(1) #3093903

詳解 (共 1 筆)

uu(已上榜)

B1 · 2023/11/05

#5959947

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15. Which series of reactions described below, if any, will result in the formation of 2-methylpentan-3- one starting with 1-propanol? (A) 1. (CH3)2CHMgBr； 2. dilute H3O+； 3.PCC. (B) 1. PCC； 2. (CH3)2CHLi； 3. dilute H3O+； 4. Na2Cr2O7/H2SO4. (C) 1. Na2Cr2O7/H2SO4；2.2(CH3)2CHMgBr, 3. dilute H3O+；4.LiAIH4. (D) 1. Na2Cr2O7/H2SO4； 2. SOCI2； 3.2(CH3)2CHMgBr；4.H3O+. (E) none of the above

12. Which of the following would not have a C-H stretch at about 3050 cm^-1?
(A) 1-pentene
(B) 2-pentene
(C) 2,3-dimethyl-2-pentene
(D) 2-methyl-2-pentene
(E) 2,4-dimethyl-2-pentene

詳解 (共 1 筆)

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