1,2-Dimethoxyethane → HCID 89980000, compound

Participants

Reaction Conditions

Reaction Steps

Example 95-2. 9-bromo-2-(3-cyclopropyl-1H-1,2,4-triazol-1-yl)-7,8-dihydro-[1,4]diazepino[7,1-a]isoquinolin-5(4H)-one (5.7 g, 14.31 mmol), (6-fluoropyridin-3-yl)boronic acid (4.03 g, 28.6 mmol) and a solution of Na2CO3 (7.58 g, 71.6 mmol) in water (28 mL) was treated with DME (114 mL). The suspension was degassed, Pd(PPh3)4 (2.48 g, 2.15 mmol) was added and the mixture was heated at 85° C. for 2 h. The mixture was allowed to warm to RT and the solvent was removed under reduced pressure. The residue was dissolved in DCM and extracted with water, saturated aqueous NaHCO3 solution and brine. The combined organic layers were dried with sodium sulfate, filtered and the solvent was removed under reduced pressure. The crude product was purified by flash-column chromatography over silicagel (Biotage Isolera Four, eluent: 70% AcOEt in heptane for 3 min, then from 70% AcOEt in heptane to 100% AcOEt in heptane in 50 min, 100% AcOEt in heptane for 10 min) to yield a beige foam (5.91 g). The residue was dissolved in DCM (100 mL) and MP-TMT resin (4.0 g, 0.71 mmol/g) was added and the mixture was stirred for 2.5 h. The resin was filtered off and the solvent was removed under reduced pressure to yield a yellow foam. The foam was crystallized from hot n-butanol (50 mL) to afford the title compound as white crystals (4.8 g). UPLC-MS: MS 415.4 (M+H+); UPLC rt 1.02 min. 1H NMR (400 MHz, DMSO-d6) δ ppm 0.79-0.87 (m, 2 H), 0.89-0.99 (m, 2 H), 1.98-2.07 (m, 1 H), 2.87 (t, J=6.11 Hz, 2 H), 3.72 (t, J=6.11 Hz, 2 H), 4.30 (s, 2 H), 7.05 (s, 1 H), 7.31 (dd, J=8.44, 2.57 Hz, 1 H), 7.47-7.56 (m, 2 H), 7.89-7.97 (m, 1 H), 8.07 (td, J=8.13, 2.57 Hz, 1 H), 8.30 (d, J=2.45 Hz, 1 H), 9.00 (s, 1 H).

Provenance & Evidence