Sodium Carbonate → 2-((Benzyloxy)carbonyl)-2,8-diazaspiro[4.5]decane-3-carboxylic acid

Participants

Reaction Steps

To a solution of (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 (80 mg, 0.12 mmol) in dioxane (1 mL)/Na2CO3 (1.0 mL, 2 M, aq) were added (3-methoxyphenyl)boronic acid (22 mg, 0.14 mmol) and Pd(dppf)2 (8 mg, 0.01 mmol). The reaction flask was degassed and refilled with argon via balloon 3 times, and the reaction mixture was refluxed for 4 h. Then the reaction was cooled to RT, concentrated in vacuo, and extracted with EtOAc. The combined organic layers were are washed with brine, dried over Na2SO4, filtered, and concentrated in vacuo. Purification by reverse phase silica gel column (H2O/NH4OH/MeOH) provided (S)-8-(2-amino-6-((S)-2,2,2-trifluoro-1-(3′-methoxy-[1,1′-biphenyl]-4-yl)ethoxy)-4-yl)ethoxy)pyrimidin-4-yl)-2-((benzyloxy)carbonyl)-2,8-diazaspiro[4.5]decane-3-carboxylic acid as a white solid.

Provenance & Evidence