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Question

Select the best reaction sequence to make the following ketone:
230025.png

A
1. propyne, NaNH2 2. 1-bromobutane 3. H2O,Hg2+2,H2SO4
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B
1. acetylene, NaNH2 2. 1-bromopentane 3. H2O,Hg2+2,H2SO4
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C
1. 1-hexene, NaNH2 2. bromomethane 3. H2O,Hg2+2,H2SO4
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D
1. 1-pentyne, NaNH2 2. bromomethane 3. H2O,Hg2+2,H2SO4
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Solution

The correct option is C 1. acetylene, NaNH2 2. 1-bromopentane 3. H2O,Hg2+2,H2SO4
The product 2heptanone is formed best by reaction B.
1. acetylene,NaNH2 2. 1bromopentane 3. H2O,Hg2+,H2SO4

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