تفاعل #65325

معادلة التفاعل

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

pyridine water

hydrogen sulphide

→

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

المردود 20.0%

المذيبات

acetic acid

ظروف التفاعل

المعالجة

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

الإجراء التجريبي

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.

المصدر