Sử các chất không quá 2 carbon tổng hợp: $\rm cis- Hex-3-en-1-ol$

Đáp án:

$CH≡CH+NaNH_2\xrightarrow{NH_3(l)}HC≡CNa+NH_3$

`HC≡CNa+CH_3CH_2Br->CH_3-CH_2-C≡C-CH+NaBr`

$CH_3-CH_2-C≡CH+NaNH_2\xrightarrow{NH_3(l)}CH_3-CH_2-C≡CNa+NH_3$

$CH_3-CH_2-C≡CNa+(CH_2)_2O\xrightarrow{t°} CH_3-CH_2-C≡C-CH_2-CH_2ONa$

`CH_3-CH_2-C≡C-CH_2-CH_2ONa+H_2O->CH_3-CH_2-C≡C-CH_2-CH_2OH+NaOH`

$CH_3-CH_2-C≡C-CH_2-CH_2OH+H_2\xrightarrow{t°,Pd/CaCO_3}CH_3-CH_2-CH=CH-CH_2-CH_2OH$