Workbook for Organic Synthesis: The Disconnection Approach

By Stuart Warren

Book Overview

One approach to organic synthesis is retrosynthetic analysis. With this approach chemists start with the structures of their target molecules 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, 2nd Edition This workbook provides a comprehensive graded set of problems to illustrate and develop the themes of each of the chapters in the textbook Organic Synthesis: The Disconnection Approach, 2nd Edition . Each problem is followed by a fully explained solution and discussion. The examples extend the student's 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. Together the workbook and textbook provide a complete course in retrosynthetic analysis. Organic Synthesis: The Disconnection Approach, 2nd Edition There are forty chapters in Organic Synthesis: The Disconnection Approach, 2nd Edition : 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. In its second edition updated 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 . Several chapters contain extensive new material based on courses that the authors give to chemists in the pharmaceutical industry. Workbook for Organic Synthesis: The Disconnection Approach, 2nd edition , combined with the main textbook, provides a full course in retrosynthetic analysis for chemistry and biochemistry students, and a refresher course for organic chemists working in industry and academia.

• Format: Paperback
• Language: English
• ISBN: 0470712260
• ISBN13: 9780470712269
• Release Date: January 2010
• Publisher: Wiley
• Length: 288 Pages
• Weight: 1.15 lbs.
• Dimensions: 0.6" x 7.4" x 9.5"

Customer Reviews

An excellent primer for any organic synthesis course.

Warrens book "Organic Synthesis: The Disconnection Approach" serves as an excellent bridge between the elementary education received at the undergraduate level and the more complex problems faced by synthetic practitioners. Strictly speaking, the book does not stray much beyond the complement of reactions that are learned at the undergraduate level, so much of the chemistry should be familiar to anyone having taken a two semester course. The strength of this rather short book lies in its ability to identify synthetic challenges by analyzing the retrosynthetic disconnections that create them. Chapters alternate between the identification of a retrosynthetic disconnection and a discussion of a synthetic strategy. The book is valuable in that it distinguishes seemingly related compounds, such as 1,3-dicarbonyl compounds and 1,4-dicarbonyl compounds, and exposes the need for different synthetic strategies in each case - normal synthon polarity in the first case and inverse, or "umpolung", polarity in the second. Identifying relationships between functional groups in a molecule is presented as a means to determining possible strategies for its synthesis. Other important topics that are addressed include synthetic planning (order of events), stereochemistry, ring formation, reconnection, heterocycles, radical species, and many others. Overall, students should expect to gain competency in the retrosynthetic analysis of molecules of moderate complexity. The book overlooks many modern day methods, but prepares students well for a graduate level synthesis course that would include such methods and gives students a better appreciation for the problems these new methods address. In my opinion, it is one of the best introductions available. In combination with the recently published sequel "Organic Synthesis: Strategy and Control", which addresses many modern day strategies, an excellent foundation has been laid for the education of up-and-coming synthetic chemists.

Published 1991

This book to me is better then the synthon approach book by Warren. This has more explanation than just, you do this to get this, and so forth. Again this book is most def for the graduate student, but don't be afraid to pick this up along with the workbook. Remember this not a "textbook" it is a book with a specific agenda, exactly what the title says.

Retrosynthetic Analysis

Warren's Organic Synthesis-Disconnection Approach focuses on retrosynthetic analysis in organic synthesis. Some of the central concepts introduced in this strategy book are synthons, target molecule, FGI (functional group interconversion), disconnection, and reagent.Synthons: an idealized fragment, usually a cation or an anion, resulting from a disconnection. Synthons may or may not be an intermediate in the corresponding reaction.Disconnection: the reverse operation to a reaction. The imagined cleavage of a bond to "break" the molecule into possible starting materials.Functional group interconversion: the process of converting one functional group into another by substitution, addition, elimination, oxidation, or reduction, and the reverse operation used in retrosynthetic analysis.Reagent: Warren introduces a formal and rigid definition of reagent in this book. Reagent is a compound used in practice for a synthon. Warren's treatise of organic synthesis emphasizes visualizing and choosing not only the most obvious but the most efficient disconnection (retrosynthesis) in synthesizing a target molecule. The book is set up in a fashion such that synthetic strategies and organic reactions are presented in alternating chapters. Strategies aim to enforce tricks and concepts of organic synthesis like stereoselectivity, control of regiochemistry and stereochemistry, control of carbonyl condensation, order of events in synthesis, rearrangements, use of ringed molecules. Reaction chapters present some of the most significant reactions in organic synthesis, with an emphasis of those involve carbon-carbon formation. Topics of Warren's Organic Synthesis:Synthesis Strategies-The Disconnection Approach-The Order of Events-Chemoselectivity-Reversal of Polarity, Cyclization Reactions-Protecting Groups-Choosing a Disconnection (General Strategy)-Stereoselectivity-Regioselectivity-Use of Acetylenes-Introduction of Carbonyl Condensations-Control in Carbonyl Condensations-Use of Aliphatic Nitro Compounds in Synthesis-Radical Reactions in Synthesis-Reconnections-Introduction to Ring Synthesis, Saturated Heterocycles-Rearrangements in Synthesis-Use of Ketenes in Synthesis-Pericyclic Rearrangements in Synthesis-Special Methods for 5-Membered RingsReaction Methods-One Group C-X Disconnections-Two Group C-X Disconnections-Amine Synthesis-One Group C-C Disconnections: Alcohols-One Group C-C Disconnections: Carbonyl Compounds-Alkene Synthesis-Two Group Disconnections: Diels-Alder Reactions-Two Group Disconnections: 1,3-Difunctionalized Compounds and alpha,beta-unsaturated Carbonyl Compounds-Two Group Disconnections: 1,5-Difunctionalized Compounds, Michael Addition, Robinson Annulation-Two Group Disconnections: 1,2-Difunctionalized Compounds-Two Group Disconnections: 1,4-Difunctionalized Compounds-Two Group Disconnections: 1,6-Difunctionalized Compounds-Three-Membered Rings-Four-Membered Rings: Photochemistry in Synthesis-Five-Membered Rings-Six-Membered Rin

Retrosynthesis Primer

The book treats the subject of organic retrosynthesis in a very clear fashion. It will be a perfect companion for students taking sunthetic organic chemistry course.

Thinking about synthesis

Gets your mind thinking in the best way to make compounds. Instead of trying to remember hundreds of transformations, Warren's book shows you how to disconnect the compound into is smallest parts and how they could be put together. Basically, he discribes how to do retro-synthesis. Certainly another must for any medicinal or organic chemist.