Anomeric Effect · axial beats equatorial at C1
unseel.com · 2-methoxytetrahydropyran · n(O5)→σ*(C1–X)
ΔG axial
³J H1–H2
operation
ring carbons / C1
ring oxygen O5 (lone pairs)
σ*(C1–X) acceptor · methoxy X
n→σ* donation (axial only)
Unseel.com · The Anomeric Effect