Visible–Light–Induced Phosphorylation Reaction of α‐Diazoesters with H‐Phosphine Oxides to Construct (Z)‐Phosphinic Hydrazones

A convenient visible–light–promoted phosphorylation reaction of α‐diazoesters with H‐phosphine oxides for the preparation of ( Z )‐phosphinic hydrazones has been explored. This reaction could be performed under mild conditions to afford a series of ( Z )‐phosphinic hydrazones in moderate to good yields through photoisomerization of C=N bond.