Can be used as an additional teaching aid for in-depth study of chemistry by schoolchildren and special educational institutions, students, applicants, will be useful for chemistry teachers, recommended to everyone who is interested in organic chemistry or, conversely, considers it a boring subject. The author is a talented a teacher with more than 25 years of teaching experience in the chemistry class of the Academic Gymnasium of St. Petersburg University, invites readers on a fascinating journey into the world of organic chemistry. Based on material left outside school textbooks, the emergence and development of organic chemistry, its connection with other fields of science and technology, the amazing diversity of organic compounds and their even more amazing transformations are told. Contents: Only two elements. If a hydrocarbon molecule has a double connection. Syntheses based on acetylene. The mystery of benzene. Such a different hydroxyl group. Ethers. “Guest-host” and “octopus molecules” complexes.” Esters, or in the footsteps of Jules Verne’s heroes. Smell, color, structure. Organic bases .“Chemistry in space”, or a little about isometry. “Sweet relatives”. “Separating molecules, uniting people”. The strategy of organic synthesis or “creation of molecules”. What “artificial intelligence” can do, or a little about expert assessments in chemistry.< /p>