Organic synthesis refers to that branch of chemical synthesis, which deals with the use of organic reactions to produce organic compounds. The three main sub-branches of organic synthesis are methodology and applications, total synthesis, and semisynthesis. Such selected concepts that redefine this field have been presented in this book. It unfolds the innovative aspects of the area, which will be crucial for the holistic understanding of the subject matter. This textbook, with its detailed analyses and data, will prove immensely beneficial to students involved in this area at various levels.