is a must-have workbook for students and professionals alike, offering step-by-step guidance on applying proven strategies and logical techniques to solve complex reaction mechanism problems. The book is organized in two sections: The Toolbox and the Problem Chest. The first part is presented in four chapters covering advanced contemporary issues of molecular structure and orbital configuration, stereoelectronic constraints, electron shifts, redeployment and arrow-pushing allowances and pitfalls, as well as functional groups roles and key intermediate species, all of which dominate the reaction mechanism scenario. These concepts are rounded up by a series of time-tested problem analysis strategies and thinking routes shown in flowcharts and illustrated by application to specific cases. The Problem Chest puts together a set of 50 newly selected fully discussed mechanism problems of increasing difficulty, in which all the power of the Toolbox paraphernalia is put to work. Now in its third edition, retains the structure of previous editions, previously rated among the 30 best organic chemistry books of all time by BookAuthority. More than 50 revised organic reaction mechanism problems are complemented by an entirely new set of problems, additional concepts and techniques, expanded coverage of applications in contemporary organic chemistry, embedded cases of the existing reaction pool taken from recent literature, and much more. is an essential volume for advanced undergraduates, graduate students, lecturers, and professionals looking to improve their performance in finding solutions to organic reaction problems. It is an ideal textbook for courses on organic reactions and problem analysis, as well as an excellent supplement for courses covering reactive intermediates and mechanisms of molecular transformations.