Triphenylphosphine → Tert-butyl 2-(aminomethyl)-4-chlorobenzylcarbamate

Reaction equation

[N:1]([CH2:4][C:5]1[CH:19]=[C:18]([Cl:20])[CH:17]=[CH:16][C:6]=1[CH2:7][NH:8][C:9](=[O:15])[O:10][C:11]([CH3:14])([CH3:13])[CH3:12])=[N+]=[N-].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>C1COCC1.O>[NH2:1][CH2:4][C:5]1[CH:19]=[C:18]([Cl:20])[CH:17]=[CH:16][C:6]=1[CH2:7][NH:8][C:9](=[O:15])[O:10][C:11]([CH3:14])([CH3:13])[CH3:12]

Participants

Procedure

To a solution of tert-butyl 2-(azidomethyl)-4-chlorobenzylcarbamate (10.9 g, 36.73 mmol) in THF (60 ml) and water (6 ml) was added triphenylphospine (10.59 g, 40.40 mmol). The reaction was heated to 65 C. and stirred overnight at room temperature. The reaction was concentrated in vacuo and flashed with 4% (10% NH4OH/MeOH)/dichlor-omethane. A second purification using silica gel column chromatography with a careful gradient of 3 to 5% (10% NH4OH/MeOH)/dichloro methane gave the title compound.