- e-EROS - Electronic encyclopedia of reagents for organic synthesis
- Organic Syntheses On-Line - An on-line version of the complete Organic Syntheses series searchable by structure or text.
- Als Notebook - a fantastic site listing complete experimental details for a wide variety of reactions, organized into 14 categories. Also contains useful tables of NMR of solvent impurities, tlc spray reagents, unit conversion applets, concentration sof commercial acids and bases, and common abbreviations.
- Not Voodoo-Demystifying Synthetic Organic Chemistry Laboratory Technique - tips, how-to advice, etc. for synthetic chemists
- Synthetic Pages - An interactive database of chemical procedures (complete experimental details)
- Protecting Groups - A listing of common protecting groups for a variety of functional groups and their reactivity towards water at various pH values, bases, nucleophiles, electrophiles, reducing agents, and oxidizing agents. In German (but easy to follow: red means highly reactive, yellow - intermediate reactivity, and green - unreactive).
- Organic Chemistry Portal - lots of useful tools for synthetic organic chemists including synthetic transformations, name reactions, protecting groups, abstracts, chemical suppliers, oxidizing and reducing agents, and a molecular properties calculator that allows the user to predict drug-like properties.
- Total Synthesis of Natural Products - an extremely useful compilation by Hans Reich listing several hundred total synthesis and organized by target compound name, date, keywords, reagents, and named reactions. References to the original literature are provided.
- The Mitsunobo Reaction - a seminar presented by Kevin Jantzi, University of Wisconsin
- Preparation of organolithium reagents - A extensive listing with references by Hans Reich, University of Wisconsin. A list of common additives (eg. TMEDA) for organolithium reagents is given along with a discussion of when to use each one. He also includes a listing of common amide bases with a description of which base is appropriate for certain situations. An excellent resource!
- Named Reagents for Organic Synthesis - a listing by Hans Reich.
- Named Rules and Effects - a listing by Hans Reich.
- Table of pKa values in DMSO and (also water) - organized by functional group. Very extensive.
- IUPAC Nomenclature of Organic Chemistry - Very thorough if you need the answer to a specific question, but not for casual reading.
- Stereochemical Terminology - IUPAC recommendations.
- Carbohydrate Nomenclature - IUPAC recommendations.
- Chemical Acronyms - a listing compiled by Hans Reich.
- Named Reactions - A compilation of 95 named organic reactions with structures, literature references, and mechanisms.
- Organic Reactions - A listing of 400 named reactions with structures and references.
- Web Elements - An interactive periodic table of the elements.
- Chemi-Cool Chemical Dictionary - Look up definitions for chemistry terms..
- Table of NMR Solvents - by Hans J. Reich, University of Wisconsin.
- Amino Acids - Name, abbreviation, and 3-dimensional structures.
- University of Wisconsin, Division of Organic Chemistry - lots of resources
- German-English Terms for Reaction Chemistry in Beilstein - English equivalent of common chemical terms in German.
- German-English Dictionary