Ethyl Acetate → 7-(1-methyl-2-oxo-1,2-dihydropyridin-4-yl)-3,4-dihydrobenzo[f][1,4]oxazepin-5(2H)-one

HRID 717051Notes

Reaction equation

CC1(C)C(C)(C)OB([C:9]2[CH:10]=[CH:11][C:12]3[O:18][CH2:17][CH2:16][NH:15][C:14](=[O:19])[C:13]=3[CH:20]=2)O1.Br[C:23]1[CH:28]=[CH:27][N:26]([CH3:29])[C:25](=[O:30])[CH:24]=1.C(=O)([O-])[O-].[Cs+].[Cs+].CCOC(C)=O>CN(C=O)C.O.C1(P(C2C=CC=CC=2)[C-]2C=CC=C2)C=CC=CC=1.[C-]1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=C1.[Fe+2].Cl[Pd]Cl>[CH3:29][N:26]1[CH:27]=[CH:28][C:23]([C:9]2[CH:10]=[CH:11][C:12]3[O:18][CH2:17][CH2:16][NH:15][C:14](=[O:19])[C:13]=3[CH:20]=2)=[CH:24][C:25]1=[O:30]

Participants

Conditions

Temperature: 85 °C

Procedure

A mixture of 7-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-3,4-dihydrobenzo[f][1,4]oxazepin-5(2H)-one (200 mg, 0.69 mmol), 4-bromo-1-methylpyridin-2(1H)-one (156 mg, 0.83 mmol), cesium carbonate (674 mg, 2.07 mmol), 1,1′-Bis(diphenylphosphino)ferrocene]dichloropalladium (49 mg, 0.069 mmol) was dissolved in a degassed mixture of DMF and water 3/1.5 (4.5 mL). The mixture was heated in microwave at 85° C. for 40 min. The mixture was poured into EtOAc and washed with water and brine. The organic layer was collected, dried over sodium sulfate and loaded onto silica gel. A flash column (5% MeOH in EtOAc) and reverse phase chromatography gave 7-(1-methyl-2-oxo-1,2-dihydropyridin-4-yl)-3,4-dihydrobenzo[f][1,4]oxazepin-5(2H)-one.

Workup

washwashed with water and brine
customThe organic layer was collected
dry with materialdried over sodium sulfate

Sources & evidence

ORD record: ord-f4adeba7bceb4b37a7117834787d028f
Source dataset: uspto-grants-2015_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US09193694B2

Reaction notes

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