3-Anilino-1-propanol derivatives 4a–c, 5a–c, 6a–c containing primary, secondary, and tertiary alcohols and PhNH, PhNMe, and (Ph)2N were prepared and subjected to gas-phase pyrolysis in a static reaction system. The pyrolytic reactions were homogeneous and followed a first-order rate equation. Reactions took place by retro-ene process, with the exception of compounds 5a and 5b. Analysis of the pyrolysate