反应 #3681446
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openreactiondata ↗doi:10.6084/m9.figshare.5104873.v1; patent:US05859007
反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.
实验步骤: To a stirring solution of 250 mg (0.58 mmol) of 2-(2,4-Dioxo-5-phenyl-2,3,4,5-tetrahydro-benzo[b][1,4]diazepin-1-yl)-N-isopropyl-N-phenyl acetamide in 3 mL of DMF at 0° C. is added 127 mg (0.70 mmol, 1.2 equiv) of sodium hydride (60% dispersion in mineral oil). The resulting solution is stirred 10 min, then 95 mL (0.64 mmol, 1.1 equiv) of trans-cinnamyl bromide is added. The reaction mixture is stirred 10 min at 0° C. then 2 h at RT and quenched with 1 mL H2O. The reaction mixture is diluted with 40 mL EtOAc and washed with 40 mL H2O. The organic layer is dried (MgSO4) and the solvents removed in vacuo. Purification of the resulting oil by silica gel flash column chromatography using hexane/EtOAc 4/1 as eluent followed by lyophilization of the product afforded 262 mg of the 2-[2,4-Dioxo-5-phenyl-3-(3-phenyl-allyl)-2,3,4,5-tetrahydrobenzo[b][1,4]diazepin-1-yl]-N-isopropyl-N-phenyl acetamide as a white amorphous solid: 1H NMR (CDCl3, 300 MHz) δ7.46-7.07 (m, 18H), 6.92 (dd, 1H, J=1.2, 8.1), 6.46 (d, H, J=15.9), 6.25 (m, 1H), 5.04 (m, 1H), 4.31 (d, 1H, J=16.6), 4.13 (d, 1H, J=16.6), 3.46 (dd, 1H, J=6.1, 7.8), 2.93 (m, 2H), 1.10 (2×d, 6H, J=6.9); low resolution MS (FAB) m/e 544 (MH+), 409, 223. The reaction mixture is stirred 10 min at 0° C. 2 h at RT and quenched with 1 mL H2O The reaction mixture is diluted with 40 mL EtOAc washed with 40 mL H2O The organic layer is dried (MgSO4) the solvents removed in vacuo Purification of the resulting oil by silica gel flash column chromatography
来源 ID: ord-0cd653b114b441758a5f255717149de6