反应详情

温度

0 °C

(5S)-5-(Aminomethyl)-3-(4-iodophenyl)-1,3-oxazolidin-2-one (6.0 g, 18.9 mmol) was dissolved in methanol (150 ml, c=0.1M) and cooled to 0° C. Diisopropylethylamine (13.1 ml, 75.4 mmol) was added and the reaction stirred at 0° C. for 5 min; toluenesulfonic acid 2-(2,2-dichloro-1-methylethylidene)hydrazide was then added and the reaction stirred overnight. The volatiles were concentrated in vacuo, dichloromethane was added and some product crystallized from solution; the remaining residue was purified by flash chromatography on silica gel using 0-5% methanol in dichloromethane as the eluent. The relevant fractions were combined giving 5.5 g of the desired product.

1. stirringthe reaction stirred overnight
2. concentrationThe volatiles were concentrated in vacuo, dichloromethane
3. additionwas added
4. customsome product crystallized from solution
5. customthe remaining residue was purified by flash chromatography on silica gel using 0-5% methanol in dichloromethane as the eluent