<!doctype html public «-//w3c//dtd html 4.0 transitional//en»> http-equiv=content-type> Broader theoretical insight on organic reactions in driving them automatically opens the window towards new technologies particularly to flow chemistry. This emerging concept promotes the transformation of present day's organic processes into a more rapid continuous set of synthesis operations, more compatible with the envisioned sustainable world. Our book provides a comprehensive discussion onthe theoretical foundation of flow chemistry.