Method for producing a microencapsulate and corresponding reactive amphiphilic compound, microencapsulate and composition. Method for producing a polymeric, amphiphilic, highly functionalisable and versatile microencapsulate/nanoencapsulate, which comprises 2 stages: dispersing a first liquid phase in a second liquid phase forming an emulsion, in this way said first phase remains dispersed in said second phase, and polymerising a polymer that forms the wall of the microencapsulate. Between both phases an interphase is formed with a reactive amphiphilic compound, which is a prepolymer of the polymer. The amphiphilic compound has two more main functional groups that react in the subsequent polymerisation to produce the polymer. These two main functional groups are separated from each other by between 4 to 12 links. The amphiphilic compound has at least one hydrophilic or hydrophobic functional group in one chain which is sideways with respect to the chain that links both main functional groups.
