Brz equiv 1 equiv NaN CH,CHact Lindar catalyst Huo Haso Hosor Bez 2 equiv

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Answer 1

Answer #1

1) NaNH2

2) CH3CH2CH2Cl

3) BH3/THF

4) H2O2, NaOH

Explanation: NaNH2 is a strong base which abstracts most acidic acetylene proton and produces acetylide anion which on alkylation with alkyl halide produces an extended carbon chain. Now, hydroboration - oxidation of alkyne with BH3, THF and H2O2, NaOH produces aldehyde as product.

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Answer 2

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Brz equiv 1 equiv NaN CH,CHact Lindar catalyst Huo Haso Hosor Bez 2 equiv

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Brz equiv 1 equiv NaN CH,CHact Lindar catalyst Huo Haso Hosor Bez 2 equiv