Ramberg-Backlund · Sulfone → Alkene, minus SO₂
unseel.com · α-halo sulfone → episulfone → alkene · 1940
Sulfur atoms 1
Stage 0
Stage α-halo sulfone assembled
Sulfur (of SO₂)
Oxygen / leaving halide
Carbon backbone
Hydrogen
New C=C double bond
Unseel.com · Ramberg-Backlund