tert-butyl 2-[2-(2-aminoethoxy)ethoxy]acetate

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 100 mg (0.226 mmol) of 8-(9-Fluorenylmethoxycarbonylamino)-3,6-dioxaoctanoic acid tert-butylester in 1 mL of dry DMF were treated with piperidine (89.5 μL; 0.862 mmol) at r.t. for 3 hours. The solvent was evaporated and the residue purified by chromatography on silica gel with a gradient cHex→EtOAc→EtOAc/MeOH (1:1)+3%. MeOH. Yield: 12 mg (24%) of the title compound. ESI MS: 220.08 [M+H]+. The solvent was evaporated the residue purified by chromatography on silica gel with a gradient cHex

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 100 mg (0.226 mmol) of 8-(9-Fluorenylmethoxycarbonylamino)-3,6-dioxaoctanoic acid tert-butylester in 1 mL of dry DMF were treated with piperidine (89.5 μL; 0.862 mmol) at r.t. for 3 hours. The solvent was evaporated and the residue purified by chromatography on silica gel with a gradient cHex→EtOAc→EtOAc/MeOH (1:1)+3%. MeOH. Yield: 12 mg (24%) of the title compound. ESI MS: 220.08 [M+H]+. The solvent was evaporated the residue purified by chromatography on silica gel with a gradient cHex

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 100 mg (0.226 mmol) of 8-(9-Fluorenylmethoxycarbonylamino)-3,6-dioxaoctanoic acid tert-butylester in 1 mL of dry DMF were treated with piperidine (89.5 μL; 0.862 mmol) at r.t. for 3 hours. The solvent was evaporated and the residue purified by chromatography on silica gel with a gradient cHex→EtOAc→EtOAc/MeOH (1:1)+3%. MeOH. Yield: 12 mg (24%) of the title compound. ESI MS: 220.08 [M+H]+. The solvent was evaporated the residue purified by chromatography on silica gel with a gradient cHex

Conditions: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

Procedure: 100 mg (0.226 mmol) of 8-(9-Fluorenylmethoxycarbonylamino)-3,6-dioxaoctanoic acid tert-butylester in 1 mL of dry DMF were treated with piperidine (89.5 μL; 0.862 mmol) at r.t. for 3 hours. The solvent was evaporated and the residue purified by chromatography on silica gel with a gradient cHex→EtOAc→EtOAc MeOH (1:1)+3% MeOH. Yield: 12 mg (24%) of the title compound. ESI MS: 220.08 [M+H]+. The solvent was evaporated the residue purified by chromatography on silica gel with a gradient cHex