(3-((4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl)methyl)oxetan-3-yl)methanol → ethyl (3-{[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]methyl}oxetan-3-yl)methyl (4-{[4-{[6-bromo-2-(methylcarbamoyl)pyridin-3-yl]amino}-5-(trifluoromethyl)pyrimidin-2-yl]amino}-2-chloro-3-methoxybenzyl)phosphonate

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Prepared analogously to Compound 44A using ethyl hydrogen (4-{[4-{[6-bromo-2-(methylcarbamoyl)pyridin-3-yl]amino}-5-(trifluoromethyl)pyrimidin-2-yl]amino}-2-chloro-3-methoxybenzyl)phosphonate (Compound 54B, 200 mg, 0.306 mmol) and (3-{[4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]methyl}oxetan-3-yl)methanol (Compound 44B, 95 mg, 321 mmol) to afford 264 mg of the title compound as a racemic mixture (93%). MS (ESI): m/z=929.64/931.71 [M+H]+. UPLC: tR=1.67 min (UPLC-TOF: polar—2 min).

Provenance & Evidence