2H-1-Benzazepin-2-one, 8-amino-1-ethyl-1,3,4,5-tetrahydro- → 2-[5-Bromo-2-(1-ethyl-2-oxo-2,3,4,5-tetrahydro-1H-benzo[b]azepin-8-ylamino)-pyrimidin-4-ylamino]-3-fluoro-N-methyl-benzamide

Participants

Reaction Conditions

Reaction Steps

A microwave vessel was charged with 8-amino-1-ethyl-1,3,4,5-tetrahydro-1-benzazepin-2-one (44.7 mg, 0.219 mmol), 2-(5-bromo-2-chloro-pyrimidin-4-ylamino)-3-fluoro-N-methyl-benzamide (65.6 mg, 0.182 mmol) 10-camphorsulfonic acid (4.2 mg, 0.018 mmol) and isopropyl alcohol (2.0 mL) and heated in a microwave at 120° C. for 60 minutes. The reaction mixture was quenched with a slurry of saturated, aqueous, NaHCO3 and stirred for 2 h. This mixture was diluted with water (10 mL) and extracted into DCM. The organic layer was dried by passing through a funnel filled with Na2SO4, and the filtrate was evaporated onto celite prior to purification by chromatography (amine modified silica gel, 25% EtOAc/hexane→80% EtOAc gradient). The appropriate fractions were combined, evaporated to afford a solid that was triturated with ether (2×2 mL) and yielded product (47 mg, 46%) as a pale yellow powder that had the following properties: m.p: 231-232° C.; LC/MS (ESI+): 528/530 (M+H); 1H-NMR (DMSO-d6, 400 MHz): δ 9.40 (s, 1H), 9.33 (s, 1H), 8.63 (m, 1H), 8.27 (s, 1H), 7.47 (d, J=7.0, 1H), 7.44 (s, 1H), 7.35-7.20 (m, 3H), 6.98 (d, J=8.2, 1H), 3.65 (br s, 2H), 2.75 (d, J=5.1, 3H), 2.50 (m, 2H), 2.10-1.85 (m, 4H), 0.93 (t, J=7.0, 3H).

Provenance & Evidence