Cesium carbonate → (S)-2-benzyl 3-ethyl 8-(2-amino-6-((R)-2,2,2-trifluoro-1-(3'-(hydroxymethyl)-4'-methyl-3-(3-methyl-1H-pyrazol-1-yl)-[1,1'-biphenyl]-4-yl)ethoxy)pyrimidin-4-yl)-2,8-diazaspiro[4.5]decane-2,3-dicarboxylate

Participants

Reaction Conditions

Reaction Steps

To a solution of (S)-2-benzyl 3-ethyl 8-(2-amino-6-((R)-1-(4-bromo-2-(3-methyl-1H-pyrazol-1-yl)phenyl)-2,2,2-trifluoroethoxy)pyrimidin-4-yl)-2,8-diazaspiro[4.5]decane-2,3-dicarboxylate (Step 2, Example 1u) (300 mg, 0.4 mmol, Step 2) in ethanol (2 mL) and water (0.5 mL) was added (3-(hydroxymethyl)-4-methylphenyl)boronic acid (CAS#1451391-54-0; 120 mg, 0.7 mmol), PdCl2(PPh3)2 (41 mg, 0.058 mmol), and Cs2CO3 (390 mg, 1.2 mmol). The reaction was heated to 60° C. for 16 h, then cooled to RT, filtered through celite and concentrated in vacuo. Purification by normal phase silica gel column (EtOAc/heptane) provided (S)-2-benzyl 3-ethyl 8-(2-amino-6-((R)-2,2,2-trifluoro-1-(3′-(hydroxymethyl)-4′-methyl-3-(3-methyl-1H-pyrazol-1-yl)-[1,1′-biphenyl]-4-yl)ethoxy)pyrimidin-4-yl)-2,8-diazaspiro[4.5]decane-2,3-dicarboxylate a white solid.

Provenance & Evidence