Mechanism over reaction lists: electrons move for reasons. Stereochemistry, substitution/elimination, carbonyls, spectroscopy, and biomolecules.
SIGMA: head-on overlap, electron density ON the internuclear axis, cylindrically symmetric, allows FREE rotation, present in every bond (single, and the first bond of double/triple). PI: sideways overlap of parallel p orbitals, density ABOVE and BELOW the axis, RESTRICTS rotation (rotating breaks it), and is the second/third bond of multiple bonds. Pi electrons are exposed and reactive; sigma electrons are buried and inert. Rotation locked = a pi bond is present.…
Every chapter runs the same four moves - discriminator, why-box, clinical bridge, and high-yield anchor - plus MCAT-format practice passages.
The Book 7 Final Review is free, and the 5,600+ card Anki deck is just $5 (free in the set). Video lectures for every chapter are coming soon, also free.
All six subject books (Organic Chemistry included) - ~2,220 pages of mechanism-first review. Buy once, yours forever. Book 7 is free; the Anki deck is $5 (free in the set).