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In each reaction box, place the best reagent and conditions from the list below. 1) 2) 3) 4) PB 3 H2, Lindlar catalyst BH3/THF excess NaNH2 2 equiv. NaNH2 CH3BR H20, H2SO4, H9SO4 NaBH4 Na, NH3 (1) H2О2, NaOH, H20 CH3CH2B. HBr Br2

In each reaction box, place the best reagent and conditions from the list below. 1) 2) 3) 4) PB 3 H2, Lindlar catalyst BH3/THF excess NaNH2 2 equiv. NaNH2 CH3BR H20, H2SO4, H9SO4 NaBH4 Na, NH3 (1) H2О2, NaOH, H20 CH3CH2B. HBr Br2

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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In each reaction box, place the best reagent and conditions from the list below.

## Organic Chemistry Reaction Sequence ### Objective: In each reaction box, place the best reagent and conditions from the list below to convert the starting compound to the target compound. ### Reaction Scheme: ![Reaction Scheme](image_link) ### Reagents and Conditions: The image shows a chemical reaction where an alkyne is converted into another alkyne with different substituents. The user must choose the correct reagents and conditions from the provided list to achieve this transformation. The given reagents and conditions are: - PBr₃ - H₂, Lindlar catalyst - BH₃/THF - Excess NaNH₂ - 2 equiv. NaNH₂ - CH₃Br - H₂O, H₂SO₄, HgSO₄ - NaBH₄ - Na, NH₃ (l) - H₂O₂, NaOH, H₂O - CH₃CH₂Br - HBr - Br₂ ### Explanation: Starting Material: **(left side)** A carbon-carbon alkyne. Product: **(right side)** A carbon-carbon conjugated diene. #### Detailed Steps: 1. **First Reaction Box (1):** - Possible reagent: Choose an appropriate alkylation reagent for the alkyne. 2. **Second Reaction Box (2):** - Possible reagent: Select a suitable reagent to convert the alkyne into an intermediate structure. 3. **Third Reaction Box (3):** - Possible reagent: Opt for the reagents that will further transform the intermediate into another intermediate targeting the final structure. 4. **Fourth Reaction Box (4):** - Possible reagent: Choose the final reagent to achieve the target conjugated diene structure. ### Goal: Identify the correct sequence of reagents and conditions to convert the given alkyne into the target conjugated diene structure. ### Solution: To determine the correct reagents and conditions sequence, apply principles of organic synthesis reaction mechanisms focusing on appropriate transformations such as alkylation, reduction, oxidation, etc., specific to alkyne and diene chemistry.
Transcribed Image Text:## Organic Chemistry Reaction Sequence ### Objective: In each reaction box, place the best reagent and conditions from the list below to convert the starting compound to the target compound. ### Reaction Scheme: ![Reaction Scheme](image_link) ### Reagents and Conditions: The image shows a chemical reaction where an alkyne is converted into another alkyne with different substituents. The user must choose the correct reagents and conditions from the provided list to achieve this transformation. The given reagents and conditions are: - PBr₃ - H₂, Lindlar catalyst - BH₃/THF - Excess NaNH₂ - 2 equiv. NaNH₂ - CH₃Br - H₂O, H₂SO₄, HgSO₄ - NaBH₄ - Na, NH₃ (l) - H₂O₂, NaOH, H₂O - CH₃CH₂Br - HBr - Br₂ ### Explanation: Starting Material: **(left side)** A carbon-carbon alkyne. Product: **(right side)** A carbon-carbon conjugated diene. #### Detailed Steps: 1. **First Reaction Box (1):** - Possible reagent: Choose an appropriate alkylation reagent for the alkyne. 2. **Second Reaction Box (2):** - Possible reagent: Select a suitable reagent to convert the alkyne into an intermediate structure. 3. **Third Reaction Box (3):** - Possible reagent: Opt for the reagents that will further transform the intermediate into another intermediate targeting the final structure. 4. **Fourth Reaction Box (4):** - Possible reagent: Choose the final reagent to achieve the target conjugated diene structure. ### Goal: Identify the correct sequence of reagents and conditions to convert the given alkyne into the target conjugated diene structure. ### Solution: To determine the correct reagents and conditions sequence, apply principles of organic synthesis reaction mechanisms focusing on appropriate transformations such as alkylation, reduction, oxidation, etc., specific to alkyne and diene chemistry.
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