Reacción #65325

Ecuación de reacción

2-benzyloxymethyl-2-azido-1-phthalimido-ethane

pyridine water

hydrogen sulphide

→

2-Amino-2-benzyloxymethyl-1-phthalimido-ethane

Rendimiento 20.0%

Disolventes

acetic acid

Condiciones de reacción

Tratamiento posterior

1. 1
   Otrothe reaction flask sealed
2. 2
   Otrothe reaction mixture was evaporated to dryness in vacuo
3. 3
   OtroAfter evaporation from ethanol (3×25 ml)
4. 4
   Otrothe resulting brown solid was purified by chromatography

Procedimiento

Into a stirred solution of 2-benzyloxymethyl-2-azido-1-phthalimido-ethane (500 mg, 1.5 mmol) in 4:1 pyridine/water (25 ml) was bubbled hydrogen sulphide, and the reaction was monitored by TLC. After 4 hours, the gas flow was stopped, and the reaction flask sealed. The intense green reaction mixture was stirred for another 17 hours. TLC indicated full conversion of the starting material. Glacial acetic acid was added to pH 7, and the reaction mixture was evaporated to dryness in vacuo. After evaporation from ethanol (3×25 ml), the resulting brown solid was purified by chromatography. Yield=20%. The structure was confirmed by NMR and IR.

Fuente