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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1255815Generated: November 1, 2026

Water → 1-(2-Amino-5-bromophenyl)ethan-1-one

https://huagongshe.com/reaction/1255815

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSulfuric AcidHCID 1118—
Reactant2'-AminoacetophenoneHCID 11086—
ReactantN-bromobutanimideHCID 67184—
SolventDichloromethaneHCID 6344—
Product1-(2-Amino-5-bromophenyl)ethan-1-oneHCID 1107474658.1%

Reaction Conditions

Temperature0 °C

Reaction Steps

To a mixture of 1-(2-aminophenyl)ethanone (5.0 g, 0.037 mol) in dichloromethane (60 mL) was added NBS (7.3 g, 0.04 mol). The resulting mixture was cooled to 0° C. followed by the addition of H2SO4 (0.05 mL). It was allowed to warm to room temperature and stirred overnight. To the reaction mixture was added water and extracted with dichloromethane, dried over MgSO4. The crude product was purified by column chromatography eluted with ethyl acetate/hexanes to afford the titled compound (4.6 g, 58%) as a yellow solid. m.p 87-89° C. 1H NMR (400 MHz, CDCl3): δ 2.56 (s, 3H), 6.31 (s, 2H), 7.56 (d, J=8.8 Hz, 1H), 7.33 (dd, J=2.4 Hz, 1H), 7.80 (d, J=2.4 Hz, 1H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08461157B2
Source datasetuspto-grants-2013_06
ORD IDord-8fc14d3d49be49d6af880c131944b13c
Source noteuspto-grants-2013_06