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34. Select the best synthetic sequence to accomplish the transformation shown. Br A. 1. NaOEt; 2. HBr, cold, dark; 3. H₂SO4, H₂O B. 1. NaOEt; 2. HBr hv, A; 3. KO[Bu C. 1. NaOEt; 2. HBr cold, dark; 3. KOfBu D. 1. NaOEt; 2. Br₂; 3. KOBU E. 1. NaOEt; 2. Br₂, hvi

34. Select the best synthetic sequence to accomplish the transformation shown. Br A. 1. NaOEt; 2. HBr, cold, dark; 3. H₂SO4, H₂O B. 1. NaOEt; 2. HBr hv, A; 3. KO[Bu C. 1. NaOEt; 2. HBr cold, dark; 3. KOfBu D. 1. NaOEt; 2. Br₂; 3. KOBU E. 1. NaOEt; 2. Br₂, hvi

Organic Chemistry: A Guided Inquiry
Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN:9780618974122
Author:Andrei Straumanis
Publisher:Andrei Straumanis
Chapter19: Eas: Electrophilic Aromatic Substitution
Section: Chapter Questions
Problem 45E
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34. Select the best synthetic sequence to accomplish the transformation shown. Br A. 1. NaOEt; 2. HBr, cold, dark; 3. H₂SO4, H₂O B. 1. NaOEt; 2. HBr hv, A; 3. KO/Bu C. 1. NaOEt; 2. HBr cold, dark; 3. KOtBu D. 1. NaOEt; 2. Br₂; 3. KOBU E. 1. NaOEt; 2. Br₂, hv 35. In the retrosynthesis shown below: which compound could be converted to the alkyne shown in a single reaction step, with the appropriate reagents? Br -Bri Br Br || ||| IV B. C. D. E. None 36. In the retrosynthesis shown below: which compound(s) could lead to the alcohol shown in a single step, with the appropriate reagents? OH IV I B. 11 C. ||| D. E. A. I & II 37. Which alkene cannot be converted into an alkyne by reacting it with 1) bromine followed by 2) an excess of sodium amide and then 3) water? || IV B. C. E. All work D. Br
Transcribed Image Text:34. Select the best synthetic sequence to accomplish the transformation shown. Br A. 1. NaOEt; 2. HBr, cold, dark; 3. H₂SO4, H₂O B. 1. NaOEt; 2. HBr hv, A; 3. KO/Bu C. 1. NaOEt; 2. HBr cold, dark; 3. KOtBu D. 1. NaOEt; 2. Br₂; 3. KOBU E. 1. NaOEt; 2. Br₂, hv 35. In the retrosynthesis shown below: which compound could be converted to the alkyne shown in a single reaction step, with the appropriate reagents? Br -Bri Br Br || ||| IV B. C. D. E. None 36. In the retrosynthesis shown below: which compound(s) could lead to the alcohol shown in a single step, with the appropriate reagents? OH IV I B. 11 C. ||| D. E. A. I & II 37. Which alkene cannot be converted into an alkyne by reacting it with 1) bromine followed by 2) an excess of sodium amide and then 3) water? || IV B. C. E. All work D. Br
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