N-bromobutanimide → HCID 9848065, compound

HRID 1635870Notes

Reaction equation

[Cl:1][C:2]1[CH:7]=[C:6]([N:8]2[CH:12]=[CH:11][C:10]([CH3:13])=[N:9]2)[CH:5]=[CH:4][C:3]=1[C:14]([N:16]1[C:22]2[CH:23]=[CH:24][CH:25]=[CH:26][C:21]=2[CH2:20][N:19]2[CH:27]=[CH:28][CH:29]=[C:18]2[CH2:17]1)=[O:15].[Br:30]N1C(=O)CCC1=O>ClCCl>[Br:30][C:27]1[N:19]2[C:18]([CH2:17][N:16]([C:14]([C:3]3[CH:4]=[CH:5][C:6]([N:8]4[CH:12]=[CH:11][C:10]([CH3:13])=[N:9]4)=[CH:7][C:2]=3[Cl:1])=[O:15])[C:22]3[CH:23]=[CH:24][CH:25]=[CH:26][C:21]=3[CH2:20]2)=[CH:29][CH:28]=1

Participants

Conditions

Temperature: -40 °C

Procedure

To a stirred pre-cooled solution of [2-chloro-4-(3-methyl-pyrazol-1-yl)-phenyl]-(5H,11H-pyrrolo[2,1-c][1,4]benzodiazepin-10-yl)-methanone (1.61 g) in dichloromethane (25 ml) was added solid N-bromosuccinimide (0.712 g) over 10 minutes at −78° C. The reaction was allowed to warm to −40° C. over thirty minutes. The mixture was diluted with dichloromethane, and extracted sequentially with saturated aqueous sodium bicarbonate (2×100 ml) and water (100 ml). The organic phase was dried over anhydrous sodium sulfate, filtered through a plug of silica gel, and evaporated in vacuo to a residue. Crystallization from diethyl ether yielded 1.47 g of the title compound as a colorless solid, m.p. 148-149° C. (dec); MS (EI), m/z: 480 (M)+.

Workup

extractionextracted sequentially with saturated aqueous sodium bicarbonate (2×100 ml) and water (100 ml)
dry with materialThe organic phase was dried over anhydrous sodium sulfate
filtrationfiltered through a plug of silica gel
customevaporated in vacuo to a residue
customCrystallization from diethyl ether

Sources & evidence

ORD record: ord-11fdee58f16f40fd8804ef64236869c7
Source dataset: uspto-grants-2003_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US06511974B1

Reaction notes

Loading…