Organic Chemistry

Thinking with Molecules

A Mechanism-First Approach to the Chemistry of Carbon

Open Organic Chemistry Project

A free, open-source textbook for the two-semester undergraduate sequence.

Licensed under Creative Commons Attribution-ShareAlike 4.0 International.

Generation scripts licensed under MIT.

First edition — 2026

Build system: mdBook (HTML) + Jupyter Book (PDF)

"I would rather walk with a friend in the dark, than alone in the light." — Helen Keller

"The beauty of chemistry is that it is a science that does itself in front of you. You do not have to wait for new instruments or new telescopes. You do the experiment, and the molecule tells you what it is." — Roald Hoffmann, Nobel Laureate in Chemistry