С3Н8 → С3Н6 → С3Н7Br → С3Н7OH → С2Н5CHO

CH3-CH2-CH3 →t,Pt→ H2C=CH-CH3 + H2

H2C=CH-CH3 + HBr→H2O2→ H3C-CH2-CH2-Br

H3C-CH2-CH2-Br + NaOH(водн р-р) → CH3-CH2-CH2-OH + NaBr

CH3-CH2-CH2-OH + CuO →t°→ H3C-CH2-C=O

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