Staudinger Ligation · Azide + Phosphine → Amide
unseel.com · bioorthogonal · Saxon & Bertozzi 2000
Intermediate azide + phosphine
N₂ released 0
Step reactants assembled
Nitrogen (azide N₃)
Phosphorus (P)
Carbonyl / ester trap
New amide bond
Aryl / R fragment
Unseel.com · Staudinger Ligation