Sodium bis(trimethylsilyl)amide → 2-[3-(1-tert-butoxycarbonyl-1H-indazol-3-ylmethyl)-2,4-dioxo-5-phenyl-2,3,4,5-tetrahydro-benzo[b][1,4]diazepin-1-yl]-N-(4-fluoro-phenyl)-N-isopropyl-acetamide

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Reaction Steps

To a stirring solution of 500 mg (1.12 mmol) of 2-(2,4-dioxo-5-phenyl-2,3,4,5-tetrahydro-benzo[b][1,4]diazepin-1-yl)-N-(4-fluoro-phenyl)-N-isopropyl-acetamide, prepared as in Part B, in 10 mL DMF at 0° C. is added 2.68 mL (1.34 mmol, 1.2 equiv) of NaN(TMS)2 in toluene. The resulting solution is stirred 5 min, and 417 mg (1.34 mmol, 1.2 equiv) of 3-bromomethyl-1-tert-butoxycarbonyl-1H-indazole is added. The resulting solution is stirred 4.5 h, poured into 100 mL Et2O/EtOAc (1:1), washed with H2O (2×50 mL). The organic layer is separated, dried (MgSO4), and the solvents removed in vacuo to afford 890 mg of the crude title compound: low resolution MS (FAB) m/e 676 (MH+).

Provenance & Evidence