Reacción #1375811

Ecuación de reacción

N-benzyl-tyrosine-tert-butyl ester

bromoacetic acid-tert-butyl ester

water

potassium carbonate

→

N-Benzyl-2-(4-hydroxybenzyl)-3-azaglutaric acid-di-tert-butyl ester

Disolventes

tetrahydrofuran

Condiciones de reacción

Tratamiento posterior

1. 1
   TemperaturaAfter cooling
2. 2
   Filtraciónit is filtered
3. 3
   Concentraciónconcentrated by evaporation in a vacuum
4. 4
   Otrothe residue is chromatographed on silica gel with diethyl ether/hexane/triethylamine
5. 5
   ConcentraciónThe product fractions are concentrated by evaporation in a vacuum
6. 6
   Otrodried

Procedimiento

15.1 g (46.1 mmol) of N-benzyl-tyrosine-tert-butyl ester (Example a) is dissolved in 50 ml of tetrahydrofuran and mixed with 5 ml of water and 9.54 9 (69 mmol) of potassium carbonate. After instillation of 9.89 g (51 mmol) of bromoacetic acid-tert-butyl ester, it is stirred for two days at 65° C. After cooling, it is filtered, concentrated by evaporation in a vacuum and the residue is chromatographed on silica gel with diethyl ether/hexane/triethylamine. The product fractions are concentrated by evaporation in a vacuum and dried.

Fuente