Trifluoroacetic acid → 3-Methyl-1-phenyl-1,3,7-triaza-spiro[4.5]decan-4-one

Participants

Reaction Steps

To a solution of 3-methyl-4-oxo-1-phenyl-1,3,7-triaza-spiro[4.5]decane-7-carboxylic acid tert-butyl ester (70 mg, 0.2 mmol) in DCM (5 ml) was added TFA (0.5 ml, 6.5 mmol). The reaction mixture was stirred at RT for 1 hour before applying the reaction mixture to a 1 g SCX-2 cartridge. Impurities were eluted with 1:1 DCM:MeOH, followed by 0.05 M ammonia in 1:1 DCM:MeOH. Product was eluted with 1M ammonia in 1:1 DCM:MeOH. The clean fractions were concentrated in vacuo to afford the title compound. No further purification was performed on the title compound.

Provenance & Evidence