Reaktion #606220

Reaktionsgleichung

3-(4,7-dimethyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-yloxy)-3-methyl-azetidine-1-carboxylic acid tert-butyl ester

TFA

→

4,7-dimethyl-6-(3-methyl-azetidin-3-yloxy)-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one trifluoroacetic acid

Ausbeute 44.0%

Lösungsmittel

DCM

Reaktionsbedingungen

Aufarbeitung

1. 1
   SonstigeThe solvent was removed in vacuo
2. 2
   SonstigeThe residue was purified by preparative HPLC (Table 3, Method 6)

Vorschrift

To a solution of 3-(4,7-dimethyl-3-oxo-2,3,4,10-tetrahydro-9-oxa-1,2,4a-triaza-phenanthren-6-yloxy)-3-methyl-azetidine-1-carboxylic acid tert-butyl ester (0.024 g, 0.058 mmol) in DCM (2 mL) was added TFA (0.35 mL) and the mixture was stirred at ambient temperature for 2 h. The solvent was removed in vacuo. The residue was purified by preparative HPLC (Table 3, Method 6) to give 4,7-dimethyl-6-(3-methyl-azetidin-3-yloxy)-2,10-dihydro-9-oxa-1,2,4a-triaza-phenanthren-3-one trifluoroacetic acid as a pale solid (0.008 g, 44%). LC/MS (Table 1, Method 5) Rt=1.913 min.; MS m/z: 317 [M+H]+

Quelle