Buta-1,3-diene is presently produced from fossil fuel sources. In the future, it could be made from ethanol, and ethanol can be produced from non-food agricultural crops. The reaction sequence is shown below: $\text{CH}_3\text{CH}_2\text{OH} \xrightarrow{\text{step 1}} \text{CH}_3\text{CHO} \xrightarrow{\text{step 2}} \text{CH}_3\text{CH(OH)CH}_2\text{CHO} \xrightarrow{\text{step 3}} \text{CH}_2=\text{CHCH}=\text{CH}_2$ Which term is appropriate for step 1?
- Acondensation
- Bdehydration
- Cdehydrogenation
- Dhydrogenation