Sodium Hydroxide → (S)-8-(2-amino-6-((R)-1-(4-bromophenyl)-2,2,2-trifluoroethoxy)pyrimidin-4-yl)-2-((benzyloxy)carbonyl)-2,8-diazaspiro[4.5]decane-3-carboxylic acid

Participants

Reaction Steps

To a solution of (S)-2-benzyl 3-ethyl 8-(2-amino-6-((R)-1-(4-bromophenyl)-2,2,2-trifluoroethoxy)-pyrimidin-4-yl)-2,8-diazaspiro[4.5]decane-2,3-dicarboxylate (190 mg, 0.27 mmol) was added NaOH (100 mg, 0.26 mmol) in 15 mL THF/EtOH/H2O (2/1/2.5), and the reaction was stirred for 12 h at RT. Then, the reaction mixture was concentrated in vacuo to remove most of the organic solvents, and the pH was adjusted to 6 with 1 N HCl. EtOAc was added, and the organic layer was washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo to provide (S)-8-(2-amino-6-((R)-1-(4-bromophenyl)-2,2,2-trifluoroethoxy)pyrimidin-4-yl)-2-(benzyloxycarbonyl)-2,8-diazaspiro[4.5]decane-3-carboxylic acid as a white solid which was used without further purification.

Provenance & Evidence