One approach to organic synthesis is retrosynthetic analysis. In this, a chemist will start with the structure of their target molecule and progressively cut bonds to create simpler molecules. Reversing this process gives a synthetic route to the target molecule from simpler starting materials. This disconnection approach to synthesis is now a fundamental part of every organic synthesis course. Workbook for Organic Synthesis: The Disconnection Approach accompanies the textbook, which introduces this important technique, helping students to design their own organic syntheses. This workbook provides a comprehensive graded extra set of problems to illustrate and develop the themes of each of the chapters in the textbook. By working through this book students will develop their skills in analysing synthetic challenges, and build a toolkit of strategies for planning new syntheses. There are forty chapters: those on the synthesis of given types of molecules alternate with strategy chapters in which the methods just learnt are placed in a wider context. The synthesis chapters cover many ways of making each type of molecule starting with simple aromatic and aliphatic compounds with one functional group and progressing to molecules with many functional groups. The strategy chapters cover questions of selectivity, protection, stereochemistry, and develop more advanced thinking via reagents specifically designed for difficult problems. Each problem is followed by a fully explained solution and discussion. The examples extend the students experience of the types of molecules being synthesised by organic chemists, and the strategies they employ to control their syntheses. By working through these examples students will develop their skills in analysing synthetic challenges, and build a toolkit of strategies for planning new syntheses. Examples are drawn from pharmaceuticals, agrochemicals, natural products, pheromones, perfumery and flavouring compounds, dyestuffs, monomers, and intermediates used in more advanced synthetic work. Reasons for wishing to synthesise each compound are given. This second edition has been fully revised and updated with a modern look. Recent examples and techniques are included and illustrated additional material has been added to take the student to the level required by the sequel, Organic Synthesis: Strategy and Control The later chapters on more advanced techniques have extensive new material based on courses that the authors give to chemists in the pharmaceutical industry. Workbook Organic Synthesis: The Disconnection Approach, 2nd edition, together with the main textbook, provides a full course in retrosynthetic analysis for chemistry and biochemistry students, and a refresher for organic chemists working in industry and academia