Ohira-Bestmann · Aldehyde → Terminal Alkyne
unseel.com · RCHO → RC≡CH · K₂CO₃ / MeOH, no strong base
Step idle
N₂ lost 0
Stage reagent + aldehyde
Phosphonate P(=O)(OMe)₂
Diazo carbon / N₂
Aldehyde R-CHO
Acetyl trigger / carbene
New C≡C bond
Unseel.com · Ohira-Bestmann