氨基叔丁酯-一聚乙二醇-C2-叔丁酯

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 3-(2-tert-Butoxycarbonylamino-ethoxy)-propionic acid tert-butyl ester (10 g) was dissolved in a 1:1 trifluoroacetic acid (TFA)/DCM mixture (100 mL) and stirred at room temperature for 1 h. The solvent was then removed on a rotary evaporator and the resulting oil was re-dissolved in DCM and concentrated to dryness. This process was repeated until minimal TFA scent remained before the oil was dried on high vacuum for several hours. The solvent was then removed on a rotary evaporator the resulting oil was re-dissolved in DCM concentrated to dryness was dried on high vacuum for several hours